./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:14:43,636 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:14:43,731 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-14 05:14:43,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:14:43,738 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:14:43,770 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:14:43,771 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:14:43,771 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:14:43,771 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:14:43,772 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:14:43,772 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:14:43,772 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:14:43,772 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:14:43,772 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:14:43,773 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:14:43,773 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:14:43,773 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:14:43,773 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:14:43,773 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:14:43,774 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:14:43,774 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:14:43,774 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:14:43,775 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 05:14:43,775 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 05:14:43,775 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:14:43,775 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:14:43,776 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:14:43,776 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:14:43,776 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:14:43,776 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 05:14:43,776 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 05:14:43,776 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 05:14:43,776 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:14:43,777 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 05:14:43,777 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:14:43,777 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 05:14:43,777 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:14:43,777 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:14:43,777 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:14:43,778 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:14:43,778 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:14:43,778 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:14:43,778 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:14:43,778 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:14:43,778 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:14:43,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:14:43,779 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:14:43,779 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:14:43,779 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:14:43,779 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 [2024-11-14 05:14:44,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:14:44,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:14:44,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:14:44,179 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:14:44,179 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:14:44,183 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c Unable to find full path for "g++" [2024-11-14 05:14:46,477 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:14:46,827 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:14:46,828 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-11-14 05:14:46,868 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/data/17a3ee857/ce9c8bbb11c7426c80ec8e76aac21b0d/FLAG8529b9593 [2024-11-14 05:14:47,055 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/data/17a3ee857/ce9c8bbb11c7426c80ec8e76aac21b0d [2024-11-14 05:14:47,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:14:47,061 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:14:47,065 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:14:47,065 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:14:47,076 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:14:47,077 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:14:47" (1/1) ... [2024-11-14 05:14:47,079 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dc16fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:47, skipping insertion in model container [2024-11-14 05:14:47,079 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:14:47" (1/1) ... [2024-11-14 05:14:47,105 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:14:47,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:14:47,363 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:14:47,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:14:47,405 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:14:47,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:47 WrapperNode [2024-11-14 05:14:47,405 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:14:47,407 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:14:47,408 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:14:47,409 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:14:47,417 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:47" (1/1) ... [2024-11-14 05:14:47,426 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:47" (1/1) ... [2024-11-14 05:14:47,452 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 48 [2024-11-14 05:14:47,452 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:14:47,455 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:14:47,455 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:14:47,455 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:14:47,464 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:47" (1/1) ... [2024-11-14 05:14:47,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:47" (1/1) ... [2024-11-14 05:14:47,466 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:47" (1/1) ... [2024-11-14 05:14:47,467 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:47" (1/1) ... [2024-11-14 05:14:47,477 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:47" (1/1) ... [2024-11-14 05:14:47,485 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:47" (1/1) ... [2024-11-14 05:14:47,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:47" (1/1) ... [2024-11-14 05:14:47,490 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:47" (1/1) ... [2024-11-14 05:14:47,492 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:14:47,493 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:14:47,494 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:14:47,496 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:14:47,499 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:47" (1/1) ... [2024-11-14 05:14:47,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:14:47,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:14:47,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:14:47,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:14:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:14:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-14 05:14:47,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-14 05:14:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-14 05:14:47,583 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-14 05:14:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:14:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-14 05:14:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-14 05:14:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:14:47,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:14:47,585 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-14 05:14:47,695 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:14:47,697 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:14:47,939 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-14 05:14:47,939 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:14:48,154 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:14:48,154 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 05:14:48,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:14:48 BoogieIcfgContainer [2024-11-14 05:14:48,155 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:14:48,159 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:14:48,159 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:14:48,165 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:14:48,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:14:47" (1/3) ... [2024-11-14 05:14:48,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643da12b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:14:48, skipping insertion in model container [2024-11-14 05:14:48,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:47" (2/3) ... [2024-11-14 05:14:48,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643da12b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:14:48, skipping insertion in model container [2024-11-14 05:14:48,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:14:48" (3/3) ... [2024-11-14 05:14:48,169 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2024-11-14 05:14:48,189 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:14:48,191 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-nonblocking-cntr-alt.wvr.c that has 3 procedures, 22 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-14 05:14:48,191 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-14 05:14:48,259 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-14 05:14:48,300 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 23 transitions, 60 flow [2024-11-14 05:14:48,328 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 61 states, 59 states have (on average 2.288135593220339) internal successors, (135), 60 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:14:48,360 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:14:48,375 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@69ff8b0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:14:48,375 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-14 05:14:48,380 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 59 states have (on average 2.288135593220339) internal successors, (135), 60 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:14:48,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 05:14:48,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:14:48,391 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:14:48,393 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:14:48,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:14:48,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1843479220, now seen corresponding path program 1 times [2024-11-14 05:14:48,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:14:48,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934370913] [2024-11-14 05:14:48,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:14:48,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:14:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:14:48,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:14:48,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:14:48,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934370913] [2024-11-14 05:14:48,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934370913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:14:48,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:14:48,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:14:48,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811952730] [2024-11-14 05:14:48,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:14:48,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:14:48,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:14:48,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:14:48,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:14:48,897 INFO L87 Difference]: Start difference. First operand has 61 states, 59 states have (on average 2.288135593220339) internal successors, (135), 60 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:14:49,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:14:49,025 INFO L93 Difference]: Finished difference Result 97 states and 220 transitions. [2024-11-14 05:14:49,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:14:49,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-14 05:14:49,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:14:49,043 INFO L225 Difference]: With dead ends: 97 [2024-11-14 05:14:49,043 INFO L226 Difference]: Without dead ends: 81 [2024-11-14 05:14:49,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:14:49,051 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 23 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:14:49,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 5 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:14:49,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-14 05:14:49,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 70. [2024-11-14 05:14:49,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.318840579710145) internal successors, (160), 69 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:14:49,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 160 transitions. [2024-11-14 05:14:49,120 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 160 transitions. Word has length 13 [2024-11-14 05:14:49,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:14:49,121 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 160 transitions. [2024-11-14 05:14:49,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:14:49,121 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 160 transitions. [2024-11-14 05:14:49,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 05:14:49,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:14:49,122 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:14:49,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:14:49,124 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:14:49,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:14:49,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1216984430, now seen corresponding path program 1 times [2024-11-14 05:14:49,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:14:49,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004425913] [2024-11-14 05:14:49,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:14:49,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:14:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:14:49,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:14:49,348 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:14:49,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004425913] [2024-11-14 05:14:49,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004425913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:14:49,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:14:49,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:14:49,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819362309] [2024-11-14 05:14:49,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:14:49,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:14:49,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:14:49,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:14:49,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:14:49,351 INFO L87 Difference]: Start difference. First operand 70 states and 160 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:14:49,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:14:49,453 INFO L93 Difference]: Finished difference Result 126 states and 289 transitions. [2024-11-14 05:14:49,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:14:49,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-14 05:14:49,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:14:49,455 INFO L225 Difference]: With dead ends: 126 [2024-11-14 05:14:49,455 INFO L226 Difference]: Without dead ends: 106 [2024-11-14 05:14:49,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:14:49,457 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 20 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:14:49,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 5 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:14:49,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-14 05:14:49,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 82. [2024-11-14 05:14:49,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 2.3333333333333335) internal successors, (189), 81 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:14:49,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 189 transitions. [2024-11-14 05:14:49,474 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 189 transitions. Word has length 15 [2024-11-14 05:14:49,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:14:49,478 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 189 transitions. [2024-11-14 05:14:49,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:14:49,478 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 189 transitions. [2024-11-14 05:14:49,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 05:14:49,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:14:49,483 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:14:49,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 05:14:49,483 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:14:49,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:14:49,484 INFO L85 PathProgramCache]: Analyzing trace with hash -937786907, now seen corresponding path program 1 times [2024-11-14 05:14:49,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:14:49,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74686442] [2024-11-14 05:14:49,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:14:49,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:14:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:14:49,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:14:49,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:14:49,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74686442] [2024-11-14 05:14:49,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74686442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:14:49,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895270699] [2024-11-14 05:14:49,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:14:49,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:14:49,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:14:49,804 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:14:49,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:14:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:14:49,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:14:49,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:14:50,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:14:50,136 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:14:50,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:14:50,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895270699] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:14:50,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [441423104] [2024-11-14 05:14:50,516 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:14:50,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:14:50,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-14 05:14:50,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618543829] [2024-11-14 05:14:50,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:14:50,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 05:14:50,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:14:50,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 05:14:50,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:14:50,527 INFO L87 Difference]: Start difference. First operand 82 states and 189 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:14:50,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:14:50,702 INFO L93 Difference]: Finished difference Result 131 states and 306 transitions. [2024-11-14 05:14:50,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:14:50,704 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-14 05:14:50,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:14:50,705 INFO L225 Difference]: With dead ends: 131 [2024-11-14 05:14:50,706 INFO L226 Difference]: Without dead ends: 115 [2024-11-14 05:14:50,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:14:50,710 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 34 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:14:50,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 12 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:14:50,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-14 05:14:50,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 82. [2024-11-14 05:14:50,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 2.3209876543209877) internal successors, (188), 81 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:14:50,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 188 transitions. [2024-11-14 05:14:50,724 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 188 transitions. Word has length 18 [2024-11-14 05:14:50,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:14:50,724 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 188 transitions. [2024-11-14 05:14:50,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:14:50,725 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 188 transitions. [2024-11-14 05:14:50,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 05:14:50,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:14:50,726 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:14:50,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 05:14:50,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:14:50,930 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:14:50,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:14:50,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1205076487, now seen corresponding path program 2 times [2024-11-14 05:14:50,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:14:50,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133108774] [2024-11-14 05:14:50,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:14:50,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:14:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:14:51,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:14:51,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:14:51,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133108774] [2024-11-14 05:14:51,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133108774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:14:51,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235634053] [2024-11-14 05:14:51,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:14:51,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:14:51,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:14:51,543 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:14:51,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 05:14:51,639 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 05:14:51,639 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:14:51,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:14:51,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:14:52,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:14:52,170 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:14:53,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:14:53,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235634053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:14:53,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [389769417] [2024-11-14 05:14:53,186 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:14:53,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:14:53,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-14 05:14:53,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462998061] [2024-11-14 05:14:53,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:14:53,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-14 05:14:53,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:14:53,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-14 05:14:53,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2024-11-14 05:14:53,192 INFO L87 Difference]: Start difference. First operand 82 states and 188 transitions. Second operand has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:14:55,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:14:55,439 INFO L93 Difference]: Finished difference Result 266 states and 594 transitions. [2024-11-14 05:14:55,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-14 05:14:55,439 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-14 05:14:55,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:14:55,442 INFO L225 Difference]: With dead ends: 266 [2024-11-14 05:14:55,442 INFO L226 Difference]: Without dead ends: 256 [2024-11-14 05:14:55,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=577, Invalid=1873, Unknown=0, NotChecked=0, Total=2450 [2024-11-14 05:14:55,445 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 191 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:14:55,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 26 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 05:14:55,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-14 05:14:55,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 104. [2024-11-14 05:14:55,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.436893203883495) internal successors, (251), 103 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:14:55,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 251 transitions. [2024-11-14 05:14:55,461 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 251 transitions. Word has length 18 [2024-11-14 05:14:55,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:14:55,462 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 251 transitions. [2024-11-14 05:14:55,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:14:55,462 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 251 transitions. [2024-11-14 05:14:55,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 05:14:55,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:14:55,463 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:14:55,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 05:14:55,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:14:55,667 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:14:55,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:14:55,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1066548337, now seen corresponding path program 3 times [2024-11-14 05:14:55,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:14:55,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459736579] [2024-11-14 05:14:55,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:14:55,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:14:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:14:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:14:56,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:14:56,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459736579] [2024-11-14 05:14:56,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459736579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:14:56,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029597067] [2024-11-14 05:14:56,144 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:14:56,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:14:56,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:14:56,148 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:14:56,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 05:14:56,229 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:14:56,230 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:14:56,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:14:56,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:14:56,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:14:56,721 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:14:57,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:14:57,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029597067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:14:57,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1028531088] [2024-11-14 05:14:57,548 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:14:57,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:14:57,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 25 [2024-11-14 05:14:57,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907542289] [2024-11-14 05:14:57,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:14:57,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-14 05:14:57,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:14:57,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-14 05:14:57,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2024-11-14 05:14:57,558 INFO L87 Difference]: Start difference. First operand 104 states and 251 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:14:59,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:14:59,865 INFO L93 Difference]: Finished difference Result 259 states and 573 transitions. [2024-11-14 05:14:59,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-14 05:14:59,866 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-14 05:14:59,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:14:59,869 INFO L225 Difference]: With dead ends: 259 [2024-11-14 05:14:59,870 INFO L226 Difference]: Without dead ends: 237 [2024-11-14 05:14:59,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=545, Invalid=1905, Unknown=0, NotChecked=0, Total=2450 [2024-11-14 05:14:59,873 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 185 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:14:59,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 27 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 05:14:59,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-14 05:14:59,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 112. [2024-11-14 05:14:59,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.4234234234234235) internal successors, (269), 111 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:14:59,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 269 transitions. [2024-11-14 05:14:59,904 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 269 transitions. Word has length 18 [2024-11-14 05:14:59,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:14:59,904 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 269 transitions. [2024-11-14 05:14:59,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:14:59,905 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 269 transitions. [2024-11-14 05:14:59,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 05:14:59,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:14:59,906 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:14:59,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-14 05:15:00,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:00,108 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:15:00,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:00,108 INFO L85 PathProgramCache]: Analyzing trace with hash 208268453, now seen corresponding path program 4 times [2024-11-14 05:15:00,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:00,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344541511] [2024-11-14 05:15:00,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:00,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:00,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:00,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:15:00,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344541511] [2024-11-14 05:15:00,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344541511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:15:00,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490973517] [2024-11-14 05:15:00,489 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:15:00,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:00,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:15:00,492 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:15:00,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 05:15:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:00,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:15:00,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:15:00,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:00,947 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:15:01,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:01,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490973517] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:15:01,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1981958919] [2024-11-14 05:15:01,696 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:15:01,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:15:01,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-14 05:15:01,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494864791] [2024-11-14 05:15:01,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:15:01,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-14 05:15:01,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:15:01,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-14 05:15:01,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2024-11-14 05:15:01,702 INFO L87 Difference]: Start difference. First operand 112 states and 269 transitions. Second operand has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:02,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:15:02,784 INFO L93 Difference]: Finished difference Result 202 states and 450 transitions. [2024-11-14 05:15:02,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 05:15:02,785 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-14 05:15:02,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:15:02,786 INFO L225 Difference]: With dead ends: 202 [2024-11-14 05:15:02,786 INFO L226 Difference]: Without dead ends: 184 [2024-11-14 05:15:02,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=290, Invalid=1042, Unknown=0, NotChecked=0, Total=1332 [2024-11-14 05:15:02,792 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 95 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:15:02,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 19 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 05:15:02,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-14 05:15:02,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 110. [2024-11-14 05:15:02,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.385321100917431) internal successors, (260), 109 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:02,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 260 transitions. [2024-11-14 05:15:02,814 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 260 transitions. Word has length 18 [2024-11-14 05:15:02,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:15:02,814 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 260 transitions. [2024-11-14 05:15:02,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:02,814 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 260 transitions. [2024-11-14 05:15:02,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 05:15:02,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:02,816 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:15:02,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 05:15:03,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-14 05:15:03,017 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:15:03,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:03,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1387007899, now seen corresponding path program 5 times [2024-11-14 05:15:03,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:03,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381727533] [2024-11-14 05:15:03,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:03,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:03,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:03,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:15:03,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381727533] [2024-11-14 05:15:03,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381727533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:15:03,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848702708] [2024-11-14 05:15:03,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:15:03,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:03,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:15:03,413 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:15:03,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 05:15:03,488 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 05:15:03,489 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:15:03,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:15:03,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:15:03,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:03,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:15:04,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:04,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848702708] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:15:04,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1027607554] [2024-11-14 05:15:04,507 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:15:04,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:15:04,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-14 05:15:04,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457001303] [2024-11-14 05:15:04,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:15:04,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-14 05:15:04,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:15:04,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-14 05:15:04,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2024-11-14 05:15:04,511 INFO L87 Difference]: Start difference. First operand 110 states and 260 transitions. Second operand has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:05,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:15:05,491 INFO L93 Difference]: Finished difference Result 169 states and 389 transitions. [2024-11-14 05:15:05,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 05:15:05,492 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-14 05:15:05,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:15:05,494 INFO L225 Difference]: With dead ends: 169 [2024-11-14 05:15:05,494 INFO L226 Difference]: Without dead ends: 163 [2024-11-14 05:15:05,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=296, Invalid=964, Unknown=0, NotChecked=0, Total=1260 [2024-11-14 05:15:05,496 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 77 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:15:05,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 12 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 05:15:05,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-14 05:15:05,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 106. [2024-11-14 05:15:05,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.361904761904762) internal successors, (248), 105 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:05,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 248 transitions. [2024-11-14 05:15:05,505 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 248 transitions. Word has length 18 [2024-11-14 05:15:05,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:15:05,505 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 248 transitions. [2024-11-14 05:15:05,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:05,505 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 248 transitions. [2024-11-14 05:15:05,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 05:15:05,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:05,507 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:15:05,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-14 05:15:05,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-14 05:15:05,711 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:15:05,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:05,712 INFO L85 PathProgramCache]: Analyzing trace with hash 921243079, now seen corresponding path program 6 times [2024-11-14 05:15:05,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:05,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796529874] [2024-11-14 05:15:05,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:05,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:06,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:06,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:15:06,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796529874] [2024-11-14 05:15:06,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796529874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:15:06,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617308556] [2024-11-14 05:15:06,035 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:15:06,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:06,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:15:06,037 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:15:06,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 05:15:06,102 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:15:06,102 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:15:06,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:15:06,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:15:06,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:06,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:15:07,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:07,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617308556] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:15:07,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [156236821] [2024-11-14 05:15:07,071 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:15:07,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:15:07,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 25 [2024-11-14 05:15:07,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8504627] [2024-11-14 05:15:07,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:15:07,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-14 05:15:07,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:15:07,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-14 05:15:07,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2024-11-14 05:15:07,073 INFO L87 Difference]: Start difference. First operand 106 states and 248 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:09,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:15:09,172 INFO L93 Difference]: Finished difference Result 276 states and 619 transitions. [2024-11-14 05:15:09,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-14 05:15:09,173 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-14 05:15:09,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:15:09,175 INFO L225 Difference]: With dead ends: 276 [2024-11-14 05:15:09,176 INFO L226 Difference]: Without dead ends: 270 [2024-11-14 05:15:09,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=586, Invalid=2066, Unknown=0, NotChecked=0, Total=2652 [2024-11-14 05:15:09,178 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 168 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:15:09,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 27 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 05:15:09,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-14 05:15:09,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 118. [2024-11-14 05:15:09,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.4615384615384617) internal successors, (288), 117 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:09,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 288 transitions. [2024-11-14 05:15:09,189 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 288 transitions. Word has length 18 [2024-11-14 05:15:09,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:15:09,189 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 288 transitions. [2024-11-14 05:15:09,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:09,190 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 288 transitions. [2024-11-14 05:15:09,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 05:15:09,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:09,191 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:15:09,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 05:15:09,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:09,395 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:15:09,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:09,396 INFO L85 PathProgramCache]: Analyzing trace with hash 782714929, now seen corresponding path program 7 times [2024-11-14 05:15:09,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:09,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537122397] [2024-11-14 05:15:09,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:09,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:09,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:09,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:15:09,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537122397] [2024-11-14 05:15:09,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537122397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:15:09,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820656704] [2024-11-14 05:15:09,768 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:15:09,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:09,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:15:09,771 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:15:09,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 05:15:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:09,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:15:09,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:15:10,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:10,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:15:10,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:10,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820656704] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:15:10,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [936268208] [2024-11-14 05:15:10,819 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:15:10,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:15:10,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-14 05:15:10,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449673892] [2024-11-14 05:15:10,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:15:10,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-14 05:15:10,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:15:10,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-14 05:15:10,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2024-11-14 05:15:10,826 INFO L87 Difference]: Start difference. First operand 118 states and 288 transitions. Second operand has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:11,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:15:11,990 INFO L93 Difference]: Finished difference Result 235 states and 536 transitions. [2024-11-14 05:15:11,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-14 05:15:11,991 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-14 05:15:11,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:15:11,993 INFO L225 Difference]: With dead ends: 235 [2024-11-14 05:15:11,993 INFO L226 Difference]: Without dead ends: 223 [2024-11-14 05:15:11,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2024-11-14 05:15:11,994 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 136 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:15:11,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 20 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 05:15:11,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-14 05:15:12,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 114. [2024-11-14 05:15:12,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.4070796460176993) internal successors, (272), 113 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:12,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 272 transitions. [2024-11-14 05:15:12,004 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 272 transitions. Word has length 18 [2024-11-14 05:15:12,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:15:12,005 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 272 transitions. [2024-11-14 05:15:12,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:12,005 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 272 transitions. [2024-11-14 05:15:12,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 05:15:12,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:12,006 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:15:12,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-14 05:15:12,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:12,207 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:15:12,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:12,208 INFO L85 PathProgramCache]: Analyzing trace with hash -75564955, now seen corresponding path program 8 times [2024-11-14 05:15:12,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:12,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185535559] [2024-11-14 05:15:12,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:12,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:12,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:12,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:15:12,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185535559] [2024-11-14 05:15:12,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185535559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:15:12,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369134441] [2024-11-14 05:15:12,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:15:12,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:12,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:15:12,520 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:15:12,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 05:15:12,580 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:15:12,580 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:15:12,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:15:12,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:15:12,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:12,869 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:15:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:13,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369134441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:15:13,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [756508238] [2024-11-14 05:15:13,431 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:15:13,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:15:13,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-14 05:15:13,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229842678] [2024-11-14 05:15:13,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:15:13,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-14 05:15:13,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:15:13,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-14 05:15:13,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2024-11-14 05:15:13,434 INFO L87 Difference]: Start difference. First operand 114 states and 272 transitions. Second operand has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:14,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:15:14,401 INFO L93 Difference]: Finished difference Result 216 states and 494 transitions. [2024-11-14 05:15:14,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-14 05:15:14,402 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-14 05:15:14,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:15:14,403 INFO L225 Difference]: With dead ends: 216 [2024-11-14 05:15:14,404 INFO L226 Difference]: Without dead ends: 198 [2024-11-14 05:15:14,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=319, Invalid=1163, Unknown=0, NotChecked=0, Total=1482 [2024-11-14 05:15:14,405 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 114 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:15:14,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 25 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 05:15:14,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-14 05:15:14,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 98. [2024-11-14 05:15:14,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.350515463917526) internal successors, (228), 97 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:14,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 228 transitions. [2024-11-14 05:15:14,413 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 228 transitions. Word has length 18 [2024-11-14 05:15:14,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:15:14,413 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 228 transitions. [2024-11-14 05:15:14,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:14,413 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 228 transitions. [2024-11-14 05:15:14,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 05:15:14,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:14,414 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:15:14,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-14 05:15:14,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:14,615 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:15:14,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:14,615 INFO L85 PathProgramCache]: Analyzing trace with hash 781970213, now seen corresponding path program 9 times [2024-11-14 05:15:14,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:14,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878744194] [2024-11-14 05:15:14,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:14,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:14,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:14,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:15:14,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878744194] [2024-11-14 05:15:14,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878744194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:15:14,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458774356] [2024-11-14 05:15:14,912 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:15:14,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:14,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:15:14,914 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:15:14,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 05:15:14,987 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:15:14,988 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:15:14,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 05:15:14,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:15:15,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:15,340 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:15:15,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:15,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458774356] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:15:15,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1180297093] [2024-11-14 05:15:15,875 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:15:15,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:15:15,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 25 [2024-11-14 05:15:15,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443928247] [2024-11-14 05:15:15,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:15:15,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-14 05:15:15,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:15:15,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-14 05:15:15,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2024-11-14 05:15:15,877 INFO L87 Difference]: Start difference. First operand 98 states and 228 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:17,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:15:17,746 INFO L93 Difference]: Finished difference Result 348 states and 801 transitions. [2024-11-14 05:15:17,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-14 05:15:17,746 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-14 05:15:17,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:15:17,749 INFO L225 Difference]: With dead ends: 348 [2024-11-14 05:15:17,749 INFO L226 Difference]: Without dead ends: 334 [2024-11-14 05:15:17,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=681, Invalid=2181, Unknown=0, NotChecked=0, Total=2862 [2024-11-14 05:15:17,751 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 204 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:15:17,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 24 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 05:15:17,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-14 05:15:17,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 164. [2024-11-14 05:15:17,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 2.6625766871165646) internal successors, (434), 163 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:17,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 434 transitions. [2024-11-14 05:15:17,769 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 434 transitions. Word has length 18 [2024-11-14 05:15:17,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:15:17,769 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 434 transitions. [2024-11-14 05:15:17,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:17,770 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 434 transitions. [2024-11-14 05:15:17,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 05:15:17,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:17,770 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:15:17,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-14 05:15:17,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:17,971 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:15:17,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:17,971 INFO L85 PathProgramCache]: Analyzing trace with hash 643442063, now seen corresponding path program 10 times [2024-11-14 05:15:17,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:17,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733762800] [2024-11-14 05:15:17,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:17,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:18,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:15:18,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733762800] [2024-11-14 05:15:18,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733762800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:15:18,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529967508] [2024-11-14 05:15:18,258 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:15:18,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:18,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:15:18,262 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:15:18,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 05:15:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:18,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:15:18,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:15:18,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:18,607 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:15:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:19,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529967508] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:15:19,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1429101989] [2024-11-14 05:15:19,137 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:15:19,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:15:19,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-14 05:15:19,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391443959] [2024-11-14 05:15:19,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:15:19,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-14 05:15:19,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:15:19,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-14 05:15:19,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2024-11-14 05:15:19,139 INFO L87 Difference]: Start difference. First operand 164 states and 434 transitions. Second operand has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:20,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:15:20,582 INFO L93 Difference]: Finished difference Result 359 states and 838 transitions. [2024-11-14 05:15:20,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-14 05:15:20,583 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-14 05:15:20,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:15:20,586 INFO L225 Difference]: With dead ends: 359 [2024-11-14 05:15:20,586 INFO L226 Difference]: Without dead ends: 337 [2024-11-14 05:15:20,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=642, Invalid=2010, Unknown=0, NotChecked=0, Total=2652 [2024-11-14 05:15:20,588 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 255 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:15:20,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 21 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 05:15:20,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2024-11-14 05:15:20,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 159. [2024-11-14 05:15:20,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 2.5759493670886076) internal successors, (407), 158 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:20,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 407 transitions. [2024-11-14 05:15:20,598 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 407 transitions. Word has length 18 [2024-11-14 05:15:20,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:15:20,599 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 407 transitions. [2024-11-14 05:15:20,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:20,599 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 407 transitions. [2024-11-14 05:15:20,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 05:15:20,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:20,600 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:15:20,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-14 05:15:20,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-14 05:15:20,804 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:15:20,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:20,805 INFO L85 PathProgramCache]: Analyzing trace with hash -214837821, now seen corresponding path program 11 times [2024-11-14 05:15:20,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:20,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403310393] [2024-11-14 05:15:20,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:20,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:21,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:21,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:15:21,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403310393] [2024-11-14 05:15:21,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403310393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:15:21,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051639355] [2024-11-14 05:15:21,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:15:21,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:21,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:15:21,098 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:15:21,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 05:15:21,165 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 05:15:21,166 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:15:21,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:15:21,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:15:21,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:21,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:15:21,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:21,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051639355] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:15:21,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1789741788] [2024-11-14 05:15:21,991 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:15:21,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:15:21,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-14 05:15:21,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249789894] [2024-11-14 05:15:21,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:15:21,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-14 05:15:21,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:15:21,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-14 05:15:21,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2024-11-14 05:15:21,994 INFO L87 Difference]: Start difference. First operand 159 states and 407 transitions. Second operand has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:23,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:15:23,172 INFO L93 Difference]: Finished difference Result 284 states and 683 transitions. [2024-11-14 05:15:23,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-14 05:15:23,172 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-14 05:15:23,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:15:23,174 INFO L225 Difference]: With dead ends: 284 [2024-11-14 05:15:23,174 INFO L226 Difference]: Without dead ends: 266 [2024-11-14 05:15:23,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=448, Invalid=1622, Unknown=0, NotChecked=0, Total=2070 [2024-11-14 05:15:23,176 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 151 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:15:23,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 20 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:15:23,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-14 05:15:23,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 159. [2024-11-14 05:15:23,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 2.550632911392405) internal successors, (403), 158 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:23,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 403 transitions. [2024-11-14 05:15:23,186 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 403 transitions. Word has length 18 [2024-11-14 05:15:23,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:15:23,186 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 403 transitions. [2024-11-14 05:15:23,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:23,187 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 403 transitions. [2024-11-14 05:15:23,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 05:15:23,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:23,188 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:15:23,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-14 05:15:23,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-14 05:15:23,392 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:15:23,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:23,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1575204635, now seen corresponding path program 12 times [2024-11-14 05:15:23,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:23,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521553562] [2024-11-14 05:15:23,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:23,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:23,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:23,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:15:23,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521553562] [2024-11-14 05:15:23,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521553562] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:15:23,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436006941] [2024-11-14 05:15:23,650 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:15:23,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:23,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:15:23,652 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:15:23,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-14 05:15:23,726 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:15:23,726 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:15:23,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 05:15:23,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:15:24,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:24,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:15:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:24,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436006941] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:15:24,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1051023845] [2024-11-14 05:15:24,565 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:15:24,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:15:24,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 25 [2024-11-14 05:15:24,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998751132] [2024-11-14 05:15:24,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:15:24,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-14 05:15:24,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:15:24,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-14 05:15:24,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2024-11-14 05:15:24,568 INFO L87 Difference]: Start difference. First operand 159 states and 403 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:25,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:15:25,858 INFO L93 Difference]: Finished difference Result 312 states and 725 transitions. [2024-11-14 05:15:25,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-14 05:15:25,859 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-14 05:15:25,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:15:25,861 INFO L225 Difference]: With dead ends: 312 [2024-11-14 05:15:25,862 INFO L226 Difference]: Without dead ends: 285 [2024-11-14 05:15:25,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=390, Invalid=1590, Unknown=0, NotChecked=0, Total=1980 [2024-11-14 05:15:25,863 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 174 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:15:25,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 30 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 05:15:25,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-14 05:15:25,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 170. [2024-11-14 05:15:25,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 2.4615384615384617) internal successors, (416), 169 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:25,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 416 transitions. [2024-11-14 05:15:25,873 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 416 transitions. Word has length 18 [2024-11-14 05:15:25,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:15:25,874 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 416 transitions. [2024-11-14 05:15:25,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:25,874 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 416 transitions. [2024-11-14 05:15:25,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:15:25,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:25,875 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:15:25,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-14 05:15:26,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-14 05:15:26,076 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:15:26,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:26,076 INFO L85 PathProgramCache]: Analyzing trace with hash 794968748, now seen corresponding path program 13 times [2024-11-14 05:15:26,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:26,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084806309] [2024-11-14 05:15:26,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:26,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:26,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:26,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:15:26,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084806309] [2024-11-14 05:15:26,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084806309] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:15:26,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367117017] [2024-11-14 05:15:26,410 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:15:26,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:26,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:15:26,412 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:15:26,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 05:15:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:26,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:15:26,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:15:26,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:26,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:15:27,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:27,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367117017] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:15:27,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2091459821] [2024-11-14 05:15:27,666 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:15:27,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:15:27,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:15:27,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120641972] [2024-11-14 05:15:27,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:15:27,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:15:27,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:15:27,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:15:27,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=943, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:15:27,668 INFO L87 Difference]: Start difference. First operand 170 states and 416 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:30,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:15:30,876 INFO L93 Difference]: Finished difference Result 377 states and 877 transitions. [2024-11-14 05:15:30,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-14 05:15:30,877 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:15:30,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:15:30,879 INFO L225 Difference]: With dead ends: 377 [2024-11-14 05:15:30,879 INFO L226 Difference]: Without dead ends: 363 [2024-11-14 05:15:30,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1892 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=969, Invalid=5511, Unknown=0, NotChecked=0, Total=6480 [2024-11-14 05:15:30,884 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 130 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:15:30,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 12 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 05:15:30,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-14 05:15:30,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 224. [2024-11-14 05:15:30,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 2.4887892376681613) internal successors, (555), 223 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:30,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 555 transitions. [2024-11-14 05:15:30,898 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 555 transitions. Word has length 21 [2024-11-14 05:15:30,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:15:30,898 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 555 transitions. [2024-11-14 05:15:30,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:30,899 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 555 transitions. [2024-11-14 05:15:30,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:15:30,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:30,900 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:15:30,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-14 05:15:31,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-14 05:15:31,114 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:15:31,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:31,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1081161854, now seen corresponding path program 14 times [2024-11-14 05:15:31,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:31,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128157109] [2024-11-14 05:15:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:31,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:31,451 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:31,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:15:31,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128157109] [2024-11-14 05:15:31,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128157109] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:15:31,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289721350] [2024-11-14 05:15:31,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:15:31,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:31,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:15:31,454 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:15:31,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-14 05:15:31,515 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:15:31,515 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:15:31,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:15:31,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:15:31,941 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:31,941 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:15:32,584 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:32,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289721350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:15:32,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [657947487] [2024-11-14 05:15:32,585 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:15:32,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:15:32,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:15:32,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992769706] [2024-11-14 05:15:32,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:15:32,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:15:32,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:15:32,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:15:32,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=915, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:15:32,587 INFO L87 Difference]: Start difference. First operand 224 states and 555 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:37,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:15:37,779 INFO L93 Difference]: Finished difference Result 615 states and 1388 transitions. [2024-11-14 05:15:37,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-14 05:15:37,780 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:15:37,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:15:37,783 INFO L225 Difference]: With dead ends: 615 [2024-11-14 05:15:37,783 INFO L226 Difference]: Without dead ends: 593 [2024-11-14 05:15:37,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3602 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1737, Invalid=8975, Unknown=0, NotChecked=0, Total=10712 [2024-11-14 05:15:37,786 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 330 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1939 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 2094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:15:37,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 65 Invalid, 2094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1939 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-14 05:15:37,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2024-11-14 05:15:37,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 278. [2024-11-14 05:15:37,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 2.664259927797834) internal successors, (738), 277 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:37,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 738 transitions. [2024-11-14 05:15:37,810 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 738 transitions. Word has length 21 [2024-11-14 05:15:37,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:15:37,810 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 738 transitions. [2024-11-14 05:15:37,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:37,811 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 738 transitions. [2024-11-14 05:15:37,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:15:37,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:37,815 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:15:37,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-14 05:15:38,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-14 05:15:38,015 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:15:38,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:38,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1219690004, now seen corresponding path program 15 times [2024-11-14 05:15:38,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:38,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898748961] [2024-11-14 05:15:38,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:38,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:38,366 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:38,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:15:38,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898748961] [2024-11-14 05:15:38,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898748961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:15:38,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403213024] [2024-11-14 05:15:38,366 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:15:38,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:38,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:15:38,368 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:15:38,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-14 05:15:38,428 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:15:38,428 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:15:38,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 05:15:38,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:15:38,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:38,978 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:15:39,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:39,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403213024] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:15:39,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1928922925] [2024-11-14 05:15:39,591 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:15:39,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:15:39,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 34 [2024-11-14 05:15:39,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862900561] [2024-11-14 05:15:39,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:15:39,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 05:15:39,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:15:39,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 05:15:39,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=978, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 05:15:39,594 INFO L87 Difference]: Start difference. First operand 278 states and 738 transitions. Second operand has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:42,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:15:42,551 INFO L93 Difference]: Finished difference Result 505 states and 1233 transitions. [2024-11-14 05:15:42,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-14 05:15:42,551 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:15:42,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:15:42,554 INFO L225 Difference]: With dead ends: 505 [2024-11-14 05:15:42,554 INFO L226 Difference]: Without dead ends: 465 [2024-11-14 05:15:42,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1538 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=873, Invalid=4383, Unknown=0, NotChecked=0, Total=5256 [2024-11-14 05:15:42,556 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 257 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1632 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:15:42,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 44 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1632 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 05:15:42,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2024-11-14 05:15:42,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 294. [2024-11-14 05:15:42,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 2.631399317406143) internal successors, (771), 293 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:42,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 771 transitions. [2024-11-14 05:15:42,573 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 771 transitions. Word has length 21 [2024-11-14 05:15:42,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:15:42,573 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 771 transitions. [2024-11-14 05:15:42,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:42,574 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 771 transitions. [2024-11-14 05:15:42,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:15:42,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:42,577 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:15:42,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-14 05:15:42,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-14 05:15:42,782 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:15:42,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:42,783 INFO L85 PathProgramCache]: Analyzing trace with hash 621721056, now seen corresponding path program 16 times [2024-11-14 05:15:42,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:42,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979310465] [2024-11-14 05:15:42,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:42,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:43,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:43,120 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:15:43,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979310465] [2024-11-14 05:15:43,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979310465] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:15:43,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235455364] [2024-11-14 05:15:43,120 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:15:43,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:43,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:15:43,123 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:15:43,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-14 05:15:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:43,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:15:43,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:15:43,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:43,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:15:44,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:44,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235455364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:15:44,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [977782662] [2024-11-14 05:15:44,270 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:15:44,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:15:44,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:15:44,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792187677] [2024-11-14 05:15:44,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:15:44,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:15:44,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:15:44,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:15:44,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:15:44,272 INFO L87 Difference]: Start difference. First operand 294 states and 771 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:46,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:15:46,306 INFO L93 Difference]: Finished difference Result 414 states and 1028 transitions. [2024-11-14 05:15:46,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-14 05:15:46,306 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:15:46,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:15:46,309 INFO L225 Difference]: With dead ends: 414 [2024-11-14 05:15:46,309 INFO L226 Difference]: Without dead ends: 404 [2024-11-14 05:15:46,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1049 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=623, Invalid=3283, Unknown=0, NotChecked=0, Total=3906 [2024-11-14 05:15:46,311 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 107 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:15:46,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 17 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 05:15:46,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-14 05:15:46,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 294. [2024-11-14 05:15:46,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 2.631399317406143) internal successors, (771), 293 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:46,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 771 transitions. [2024-11-14 05:15:46,325 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 771 transitions. Word has length 21 [2024-11-14 05:15:46,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:15:46,326 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 771 transitions. [2024-11-14 05:15:46,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:46,326 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 771 transitions. [2024-11-14 05:15:46,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:15:46,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:46,328 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:15:46,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-14 05:15:46,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-14 05:15:46,528 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:15:46,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:46,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1972348814, now seen corresponding path program 17 times [2024-11-14 05:15:46,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:46,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946598144] [2024-11-14 05:15:46,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:46,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:46,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:46,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:15:46,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946598144] [2024-11-14 05:15:46,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946598144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:15:46,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495214922] [2024-11-14 05:15:46,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:15:46,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:46,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:15:46,868 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:15:46,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-14 05:15:46,926 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:15:46,926 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:15:46,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:15:46,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:15:47,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:47,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:15:48,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:48,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495214922] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:15:48,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [742183253] [2024-11-14 05:15:48,207 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:15:48,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:15:48,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:15:48,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206900132] [2024-11-14 05:15:48,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:15:48,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:15:48,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:15:48,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:15:48,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=946, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:15:48,210 INFO L87 Difference]: Start difference. First operand 294 states and 771 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:52,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:15:52,137 INFO L93 Difference]: Finished difference Result 663 states and 1605 transitions. [2024-11-14 05:15:52,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-14 05:15:52,137 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:15:52,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:15:52,141 INFO L225 Difference]: With dead ends: 663 [2024-11-14 05:15:52,141 INFO L226 Difference]: Without dead ends: 649 [2024-11-14 05:15:52,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1572 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=845, Invalid=4705, Unknown=0, NotChecked=0, Total=5550 [2024-11-14 05:15:52,143 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 267 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:15:52,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 74 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-14 05:15:52,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2024-11-14 05:15:52,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 326. [2024-11-14 05:15:52,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 2.68) internal successors, (871), 325 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:52,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 871 transitions. [2024-11-14 05:15:52,158 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 871 transitions. Word has length 21 [2024-11-14 05:15:52,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:15:52,159 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 871 transitions. [2024-11-14 05:15:52,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:52,159 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 871 transitions. [2024-11-14 05:15:52,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:15:52,160 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:52,161 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:15:52,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-14 05:15:52,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:52,361 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:15:52,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:52,362 INFO L85 PathProgramCache]: Analyzing trace with hash 975540780, now seen corresponding path program 18 times [2024-11-14 05:15:52,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:52,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716100944] [2024-11-14 05:15:52,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:52,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:52,699 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:52,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:15:52,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716100944] [2024-11-14 05:15:52,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716100944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:15:52,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097640268] [2024-11-14 05:15:52,700 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:15:52,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:52,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:15:52,702 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:15:52,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-14 05:15:52,765 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:15:52,766 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:15:52,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 05:15:52,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:15:53,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:53,019 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:15:53,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:53,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097640268] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:15:53,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1425889528] [2024-11-14 05:15:53,546 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:15:53,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:15:53,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2024-11-14 05:15:53,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420771597] [2024-11-14 05:15:53,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:15:53,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-14 05:15:53,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:15:53,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-14 05:15:53,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2024-11-14 05:15:53,550 INFO L87 Difference]: Start difference. First operand 326 states and 871 transitions. Second operand has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:55,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:15:55,282 INFO L93 Difference]: Finished difference Result 486 states and 1231 transitions. [2024-11-14 05:15:55,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-14 05:15:55,283 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:15:55,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:15:55,285 INFO L225 Difference]: With dead ends: 486 [2024-11-14 05:15:55,285 INFO L226 Difference]: Without dead ends: 454 [2024-11-14 05:15:55,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=450, Invalid=2856, Unknown=0, NotChecked=0, Total=3306 [2024-11-14 05:15:55,288 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 144 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:15:55,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 27 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 05:15:55,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2024-11-14 05:15:55,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 342. [2024-11-14 05:15:55,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 2.6774193548387095) internal successors, (913), 341 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:55,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 913 transitions. [2024-11-14 05:15:55,303 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 913 transitions. Word has length 21 [2024-11-14 05:15:55,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:15:55,304 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 913 transitions. [2024-11-14 05:15:55,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:55,304 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 913 transitions. [2024-11-14 05:15:55,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:15:55,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:55,305 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:15:55,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-14 05:15:55,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:55,505 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:15:55,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:55,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1098608134, now seen corresponding path program 19 times [2024-11-14 05:15:55,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:55,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851374647] [2024-11-14 05:15:55,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:55,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:55,791 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:55,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:15:55,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851374647] [2024-11-14 05:15:55,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851374647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:15:55,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296074542] [2024-11-14 05:15:55,792 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:15:55,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:55,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:15:55,794 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:15:55,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-14 05:15:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:55,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:15:55,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:15:56,307 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:56,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:15:57,010 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:15:57,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296074542] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:15:57,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1751285555] [2024-11-14 05:15:57,010 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:15:57,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:15:57,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:15:57,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022130580] [2024-11-14 05:15:57,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:15:57,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:15:57,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:15:57,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:15:57,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:15:57,012 INFO L87 Difference]: Start difference. First operand 342 states and 913 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:59,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:15:59,739 INFO L93 Difference]: Finished difference Result 632 states and 1574 transitions. [2024-11-14 05:15:59,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-14 05:15:59,740 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:15:59,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:15:59,742 INFO L225 Difference]: With dead ends: 632 [2024-11-14 05:15:59,743 INFO L226 Difference]: Without dead ends: 618 [2024-11-14 05:15:59,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1689 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=923, Invalid=4777, Unknown=0, NotChecked=0, Total=5700 [2024-11-14 05:15:59,744 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 245 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:15:59,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 64 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 05:15:59,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2024-11-14 05:15:59,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 344. [2024-11-14 05:15:59,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 2.682215743440233) internal successors, (920), 343 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:59,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 920 transitions. [2024-11-14 05:15:59,760 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 920 transitions. Word has length 21 [2024-11-14 05:15:59,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:15:59,761 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 920 transitions. [2024-11-14 05:15:59,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:15:59,761 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 920 transitions. [2024-11-14 05:15:59,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:15:59,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:59,763 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:15:59,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-14 05:15:59,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:59,964 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:15:59,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:59,964 INFO L85 PathProgramCache]: Analyzing trace with hash -611322384, now seen corresponding path program 20 times [2024-11-14 05:15:59,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:59,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357377386] [2024-11-14 05:15:59,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:59,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:00,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:00,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:16:00,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357377386] [2024-11-14 05:16:00,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357377386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:16:00,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604331888] [2024-11-14 05:16:00,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:16:00,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:00,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:16:00,302 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:16:00,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-14 05:16:00,364 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:16:00,365 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:16:00,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:16:00,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:16:00,833 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:00,833 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:16:01,461 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:01,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604331888] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:16:01,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1302732397] [2024-11-14 05:16:01,461 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:16:01,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:16:01,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:16:01,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788597561] [2024-11-14 05:16:01,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:16:01,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:16:01,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:16:01,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:16:01,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=928, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:16:01,463 INFO L87 Difference]: Start difference. First operand 344 states and 920 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:03,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:16:03,902 INFO L93 Difference]: Finished difference Result 706 states and 1766 transitions. [2024-11-14 05:16:03,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-14 05:16:03,903 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:16:03,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:16:03,907 INFO L225 Difference]: With dead ends: 706 [2024-11-14 05:16:03,907 INFO L226 Difference]: Without dead ends: 692 [2024-11-14 05:16:03,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1916 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=927, Invalid=5079, Unknown=0, NotChecked=0, Total=6006 [2024-11-14 05:16:03,909 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 216 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1545 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:16:03,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 46 Invalid, 1636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1545 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 05:16:03,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2024-11-14 05:16:03,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 396. [2024-11-14 05:16:03,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 2.7645569620253165) internal successors, (1092), 395 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:03,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1092 transitions. [2024-11-14 05:16:03,926 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1092 transitions. Word has length 21 [2024-11-14 05:16:03,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:16:03,926 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 1092 transitions. [2024-11-14 05:16:03,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:03,927 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1092 transitions. [2024-11-14 05:16:03,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:16:03,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:16:03,928 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:16:03,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-14 05:16:04,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-14 05:16:04,132 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:16:04,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:16:04,133 INFO L85 PathProgramCache]: Analyzing trace with hash -773959794, now seen corresponding path program 21 times [2024-11-14 05:16:04,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:16:04,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295846] [2024-11-14 05:16:04,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:16:04,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:16:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:04,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:04,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:16:04,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295846] [2024-11-14 05:16:04,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:16:04,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703502961] [2024-11-14 05:16:04,415 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:16:04,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:04,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:16:04,418 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:16:04,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-14 05:16:04,481 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:16:04,481 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:16:04,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 05:16:04,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:16:04,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:04,846 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:16:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:05,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703502961] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:16:05,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2942268] [2024-11-14 05:16:05,318 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:16:05,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:16:05,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 33 [2024-11-14 05:16:05,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705997402] [2024-11-14 05:16:05,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:16:05,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:16:05,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:16:05,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:16:05,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=955, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:16:05,320 INFO L87 Difference]: Start difference. First operand 396 states and 1092 transitions. Second operand has 34 states, 34 states have (on average 1.588235294117647) internal successors, (54), 33 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:06,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:16:06,113 INFO L93 Difference]: Finished difference Result 527 states and 1398 transitions. [2024-11-14 05:16:06,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-14 05:16:06,114 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.588235294117647) internal successors, (54), 33 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:16:06,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:16:06,118 INFO L225 Difference]: With dead ends: 527 [2024-11-14 05:16:06,118 INFO L226 Difference]: Without dead ends: 499 [2024-11-14 05:16:06,120 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=334, Invalid=2018, Unknown=0, NotChecked=0, Total=2352 [2024-11-14 05:16:06,122 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 83 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:16:06,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 16 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:16:06,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2024-11-14 05:16:06,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 396. [2024-11-14 05:16:06,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 2.759493670886076) internal successors, (1090), 395 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:06,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1090 transitions. [2024-11-14 05:16:06,140 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1090 transitions. Word has length 21 [2024-11-14 05:16:06,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:16:06,141 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 1090 transitions. [2024-11-14 05:16:06,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.588235294117647) internal successors, (54), 33 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:06,141 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1090 transitions. [2024-11-14 05:16:06,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:16:06,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:16:06,143 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:16:06,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-14 05:16:06,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-14 05:16:06,344 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:16:06,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:16:06,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1904516844, now seen corresponding path program 22 times [2024-11-14 05:16:06,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:16:06,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225885070] [2024-11-14 05:16:06,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:16:06,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:16:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:06,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:06,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:16:06,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225885070] [2024-11-14 05:16:06,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225885070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:16:06,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460200678] [2024-11-14 05:16:06,688 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:16:06,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:06,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:16:06,691 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:16:06,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-14 05:16:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:06,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:16:06,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:16:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:07,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:16:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:07,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460200678] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:16:07,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1937449598] [2024-11-14 05:16:07,883 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:16:07,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:16:07,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:16:07,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562878324] [2024-11-14 05:16:07,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:16:07,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:16:07,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:16:07,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:16:07,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=945, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:16:07,886 INFO L87 Difference]: Start difference. First operand 396 states and 1090 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:11,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:16:11,385 INFO L93 Difference]: Finished difference Result 685 states and 1765 transitions. [2024-11-14 05:16:11,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-14 05:16:11,386 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:16:11,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:16:11,388 INFO L225 Difference]: With dead ends: 685 [2024-11-14 05:16:11,388 INFO L226 Difference]: Without dead ends: 671 [2024-11-14 05:16:11,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1904 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=978, Invalid=5502, Unknown=0, NotChecked=0, Total=6480 [2024-11-14 05:16:11,390 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 107 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 2049 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:16:11,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 24 Invalid, 2102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2049 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 05:16:11,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2024-11-14 05:16:11,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 428. [2024-11-14 05:16:11,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 2.7728337236533958) internal successors, (1184), 427 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:11,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 1184 transitions. [2024-11-14 05:16:11,408 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 1184 transitions. Word has length 21 [2024-11-14 05:16:11,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:16:11,408 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 1184 transitions. [2024-11-14 05:16:11,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:11,408 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 1184 transitions. [2024-11-14 05:16:11,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:16:11,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:16:11,410 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:16:11,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-14 05:16:11,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-14 05:16:11,614 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:16:11,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:16:11,615 INFO L85 PathProgramCache]: Analyzing trace with hash 28386242, now seen corresponding path program 23 times [2024-11-14 05:16:11,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:16:11,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348905219] [2024-11-14 05:16:11,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:16:11,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:16:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:11,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:11,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:16:11,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348905219] [2024-11-14 05:16:11,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348905219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:16:11,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236382674] [2024-11-14 05:16:11,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:16:11,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:11,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:16:11,955 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:16:11,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-14 05:16:12,024 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:16:12,025 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:16:12,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:16:12,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:16:12,450 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:12,450 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:16:13,083 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:13,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236382674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:16:13,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1921369193] [2024-11-14 05:16:13,084 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:16:13,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:16:13,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:16:13,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116352861] [2024-11-14 05:16:13,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:16:13,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:16:13,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:16:13,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:16:13,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=920, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:16:13,086 INFO L87 Difference]: Start difference. First operand 428 states and 1184 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:18,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:16:18,081 INFO L93 Difference]: Finished difference Result 924 states and 2288 transitions. [2024-11-14 05:16:18,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-11-14 05:16:18,082 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:16:18,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:16:18,086 INFO L225 Difference]: With dead ends: 924 [2024-11-14 05:16:18,086 INFO L226 Difference]: Without dead ends: 902 [2024-11-14 05:16:18,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3418 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1675, Invalid=8425, Unknown=0, NotChecked=0, Total=10100 [2024-11-14 05:16:18,088 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 323 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:16:18,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 49 Invalid, 1938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1799 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 05:16:18,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2024-11-14 05:16:18,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 478. [2024-11-14 05:16:18,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 477 states have (on average 2.8364779874213837) internal successors, (1353), 477 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:18,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 1353 transitions. [2024-11-14 05:16:18,112 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 1353 transitions. Word has length 21 [2024-11-14 05:16:18,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:16:18,112 INFO L471 AbstractCegarLoop]: Abstraction has 478 states and 1353 transitions. [2024-11-14 05:16:18,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:18,112 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1353 transitions. [2024-11-14 05:16:18,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:16:18,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:16:18,114 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:16:18,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-14 05:16:18,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-14 05:16:18,315 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:16:18,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:16:18,315 INFO L85 PathProgramCache]: Analyzing trace with hash -110141908, now seen corresponding path program 24 times [2024-11-14 05:16:18,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:16:18,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910636555] [2024-11-14 05:16:18,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:16:18,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:16:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:18,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:18,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:16:18,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910636555] [2024-11-14 05:16:18,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910636555] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:16:18,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039491865] [2024-11-14 05:16:18,598 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:16:18,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:18,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:16:18,600 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:16:18,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-14 05:16:18,647 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:16:18,647 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:16:18,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 05:16:18,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:16:19,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:19,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:16:19,734 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:19,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039491865] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:16:19,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [438454959] [2024-11-14 05:16:19,734 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:16:19,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:16:19,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 34 [2024-11-14 05:16:19,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461667622] [2024-11-14 05:16:19,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:16:19,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 05:16:19,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:16:19,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 05:16:19,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1000, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 05:16:19,737 INFO L87 Difference]: Start difference. First operand 478 states and 1353 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:23,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:16:23,777 INFO L93 Difference]: Finished difference Result 855 states and 2239 transitions. [2024-11-14 05:16:23,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-14 05:16:23,777 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:16:23,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:16:23,780 INFO L225 Difference]: With dead ends: 855 [2024-11-14 05:16:23,780 INFO L226 Difference]: Without dead ends: 802 [2024-11-14 05:16:23,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2886 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1366, Invalid=7946, Unknown=0, NotChecked=0, Total=9312 [2024-11-14 05:16:23,782 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 389 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1845 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 1996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:16:23,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 42 Invalid, 1996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1845 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 05:16:23,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2024-11-14 05:16:23,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 466. [2024-11-14 05:16:23,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 465 states have (on average 2.806451612903226) internal successors, (1305), 465 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:23,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1305 transitions. [2024-11-14 05:16:23,807 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1305 transitions. Word has length 21 [2024-11-14 05:16:23,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:16:23,808 INFO L471 AbstractCegarLoop]: Abstraction has 466 states and 1305 transitions. [2024-11-14 05:16:23,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:23,808 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1305 transitions. [2024-11-14 05:16:23,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:16:23,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:16:23,810 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:16:23,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-14 05:16:24,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-14 05:16:24,010 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:16:24,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:16:24,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1731269152, now seen corresponding path program 25 times [2024-11-14 05:16:24,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:16:24,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66742682] [2024-11-14 05:16:24,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:16:24,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:16:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:24,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:24,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:16:24,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66742682] [2024-11-14 05:16:24,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66742682] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:16:24,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379450066] [2024-11-14 05:16:24,289 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:16:24,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:24,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:16:24,291 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:16:24,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-14 05:16:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:24,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:16:24,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:16:24,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:24,749 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:16:25,387 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:25,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379450066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:16:25,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1763867000] [2024-11-14 05:16:25,388 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:16:25,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:16:25,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:16:25,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106030032] [2024-11-14 05:16:25,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:16:25,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:16:25,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:16:25,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:16:25,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:16:25,390 INFO L87 Difference]: Start difference. First operand 466 states and 1305 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:27,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:16:27,306 INFO L93 Difference]: Finished difference Result 669 states and 1779 transitions. [2024-11-14 05:16:27,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-14 05:16:27,306 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:16:27,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:16:27,310 INFO L225 Difference]: With dead ends: 669 [2024-11-14 05:16:27,310 INFO L226 Difference]: Without dead ends: 659 [2024-11-14 05:16:27,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1065 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=605, Invalid=3301, Unknown=0, NotChecked=0, Total=3906 [2024-11-14 05:16:27,312 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 115 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:16:27,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 17 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 05:16:27,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2024-11-14 05:16:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 462. [2024-11-14 05:16:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 2.8004338394793926) internal successors, (1291), 461 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:27,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 1291 transitions. [2024-11-14 05:16:27,329 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 1291 transitions. Word has length 21 [2024-11-14 05:16:27,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:16:27,329 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 1291 transitions. [2024-11-14 05:16:27,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:27,330 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 1291 transitions. [2024-11-14 05:16:27,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:16:27,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:16:27,331 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:16:27,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-14 05:16:27,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:27,532 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:16:27,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:16:27,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1213070386, now seen corresponding path program 26 times [2024-11-14 05:16:27,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:16:27,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139566577] [2024-11-14 05:16:27,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:16:27,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:16:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:27,833 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:27,833 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:16:27,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139566577] [2024-11-14 05:16:27,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139566577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:16:27,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198549904] [2024-11-14 05:16:27,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:16:27,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:27,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:16:27,835 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:16:27,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-14 05:16:27,902 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:16:27,902 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:16:27,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:16:27,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:16:28,358 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:28,358 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:16:29,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:29,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198549904] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:16:29,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [145679914] [2024-11-14 05:16:29,200 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:16:29,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:16:29,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:16:29,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706868124] [2024-11-14 05:16:29,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:16:29,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:16:29,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:16:29,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:16:29,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=944, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:16:29,203 INFO L87 Difference]: Start difference. First operand 462 states and 1291 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:32,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:16:32,601 INFO L93 Difference]: Finished difference Result 910 states and 2346 transitions. [2024-11-14 05:16:32,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-14 05:16:32,602 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:16:32,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:16:32,608 INFO L225 Difference]: With dead ends: 910 [2024-11-14 05:16:32,608 INFO L226 Difference]: Without dead ends: 896 [2024-11-14 05:16:32,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1731 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=931, Invalid=5075, Unknown=0, NotChecked=0, Total=6006 [2024-11-14 05:16:32,610 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 253 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:16:32,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 56 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 05:16:32,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2024-11-14 05:16:32,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 480. [2024-11-14 05:16:32,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 2.7933194154488517) internal successors, (1338), 479 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:32,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1338 transitions. [2024-11-14 05:16:32,632 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1338 transitions. Word has length 21 [2024-11-14 05:16:32,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:16:32,632 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 1338 transitions. [2024-11-14 05:16:32,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:32,633 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1338 transitions. [2024-11-14 05:16:32,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:16:32,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:16:32,635 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:16:32,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-14 05:16:32,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:32,836 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:16:32,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:16:32,837 INFO L85 PathProgramCache]: Analyzing trace with hash 2085088876, now seen corresponding path program 27 times [2024-11-14 05:16:32,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:16:32,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952851389] [2024-11-14 05:16:32,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:16:32,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:16:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:33,181 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:33,181 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:16:33,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952851389] [2024-11-14 05:16:33,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952851389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:16:33,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381337049] [2024-11-14 05:16:33,181 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:16:33,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:33,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:16:33,184 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:16:33,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-14 05:16:33,241 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:16:33,241 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:16:33,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 05:16:33,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:16:33,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:33,561 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:16:34,181 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:34,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381337049] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:16:34,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [953125447] [2024-11-14 05:16:34,181 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:16:34,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:16:34,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 33 [2024-11-14 05:16:34,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315546805] [2024-11-14 05:16:34,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:16:34,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:16:34,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:16:34,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:16:34,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:16:34,183 INFO L87 Difference]: Start difference. First operand 480 states and 1338 transitions. Second operand has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:37,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:16:37,024 INFO L93 Difference]: Finished difference Result 791 states and 2085 transitions. [2024-11-14 05:16:37,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-14 05:16:37,025 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:16:37,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:16:37,029 INFO L225 Difference]: With dead ends: 791 [2024-11-14 05:16:37,029 INFO L226 Difference]: Without dead ends: 750 [2024-11-14 05:16:37,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1568 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=689, Invalid=4567, Unknown=0, NotChecked=0, Total=5256 [2024-11-14 05:16:37,030 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 233 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:16:37,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 22 Invalid, 1705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1635 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 05:16:37,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2024-11-14 05:16:37,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 520. [2024-11-14 05:16:37,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 519 states have (on average 2.8092485549132946) internal successors, (1458), 519 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:37,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 1458 transitions. [2024-11-14 05:16:37,048 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 1458 transitions. Word has length 21 [2024-11-14 05:16:37,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:16:37,049 INFO L471 AbstractCegarLoop]: Abstraction has 520 states and 1458 transitions. [2024-11-14 05:16:37,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:37,049 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 1458 transitions. [2024-11-14 05:16:37,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:16:37,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:16:37,051 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:16:37,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-14 05:16:37,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-14 05:16:37,252 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:16:37,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:16:37,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2086811066, now seen corresponding path program 28 times [2024-11-14 05:16:37,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:16:37,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105174816] [2024-11-14 05:16:37,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:16:37,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:16:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:37,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:37,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:16:37,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105174816] [2024-11-14 05:16:37,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105174816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:16:37,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279571260] [2024-11-14 05:16:37,565 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:16:37,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:37,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:16:37,567 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:16:37,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-14 05:16:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:37,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:16:37,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:16:38,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:38,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:16:38,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:38,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279571260] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:16:38,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [688129668] [2024-11-14 05:16:38,765 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:16:38,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:16:38,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:16:38,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781252063] [2024-11-14 05:16:38,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:16:38,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:16:38,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:16:38,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:16:38,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=929, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:16:38,766 INFO L87 Difference]: Start difference. First operand 520 states and 1458 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:41,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:16:41,641 INFO L93 Difference]: Finished difference Result 904 states and 2376 transitions. [2024-11-14 05:16:41,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-14 05:16:41,641 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:16:41,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:16:41,647 INFO L225 Difference]: With dead ends: 904 [2024-11-14 05:16:41,647 INFO L226 Difference]: Without dead ends: 890 [2024-11-14 05:16:41,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1674 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=926, Invalid=4774, Unknown=0, NotChecked=0, Total=5700 [2024-11-14 05:16:41,649 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 272 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:16:41,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 48 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 05:16:41,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2024-11-14 05:16:41,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 504. [2024-11-14 05:16:41,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 2.8190854870775346) internal successors, (1418), 503 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:41,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1418 transitions. [2024-11-14 05:16:41,667 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1418 transitions. Word has length 21 [2024-11-14 05:16:41,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:16:41,668 INFO L471 AbstractCegarLoop]: Abstraction has 504 states and 1418 transitions. [2024-11-14 05:16:41,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:41,668 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1418 transitions. [2024-11-14 05:16:41,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:16:41,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:16:41,670 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:16:41,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-14 05:16:41,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:41,871 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:16:41,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:16:41,872 INFO L85 PathProgramCache]: Analyzing trace with hash 498225712, now seen corresponding path program 29 times [2024-11-14 05:16:41,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:16:41,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726224675] [2024-11-14 05:16:41,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:16:41,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:16:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:42,112 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:42,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:16:42,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726224675] [2024-11-14 05:16:42,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726224675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:16:42,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607251295] [2024-11-14 05:16:42,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:16:42,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:42,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:16:42,114 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:16:42,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-14 05:16:42,173 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:16:42,173 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:16:42,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:16:42,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:16:42,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:42,611 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:16:43,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:43,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607251295] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:16:43,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2091055756] [2024-11-14 05:16:43,230 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:16:43,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:16:43,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:16:43,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352581252] [2024-11-14 05:16:43,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:16:43,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:16:43,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:16:43,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:16:43,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=930, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:16:43,231 INFO L87 Difference]: Start difference. First operand 504 states and 1418 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:46,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:16:46,145 INFO L93 Difference]: Finished difference Result 958 states and 2502 transitions. [2024-11-14 05:16:46,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-14 05:16:46,146 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:16:46,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:16:46,151 INFO L225 Difference]: With dead ends: 958 [2024-11-14 05:16:46,151 INFO L226 Difference]: Without dead ends: 944 [2024-11-14 05:16:46,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1937 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=927, Invalid=5079, Unknown=0, NotChecked=0, Total=6006 [2024-11-14 05:16:46,153 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 234 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:16:46,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 48 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1542 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 05:16:46,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2024-11-14 05:16:46,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 496. [2024-11-14 05:16:46,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 495 states have (on average 2.804040404040404) internal successors, (1388), 495 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:46,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 1388 transitions. [2024-11-14 05:16:46,172 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 1388 transitions. Word has length 21 [2024-11-14 05:16:46,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:16:46,172 INFO L471 AbstractCegarLoop]: Abstraction has 496 states and 1388 transitions. [2024-11-14 05:16:46,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:46,173 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 1388 transitions. [2024-11-14 05:16:46,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:16:46,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:16:46,174 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:16:46,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-14 05:16:46,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-14 05:16:46,378 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:16:46,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:16:46,378 INFO L85 PathProgramCache]: Analyzing trace with hash 335588302, now seen corresponding path program 30 times [2024-11-14 05:16:46,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:16:46,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507324027] [2024-11-14 05:16:46,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:16:46,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:16:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:46,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:46,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:16:46,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507324027] [2024-11-14 05:16:46,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507324027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:16:46,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750119916] [2024-11-14 05:16:46,619 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:16:46,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:46,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:16:46,621 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:16:46,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-14 05:16:46,679 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:16:46,679 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:16:46,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 05:16:46,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:16:47,092 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:47,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:16:47,491 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:47,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750119916] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:16:47,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [989546559] [2024-11-14 05:16:47,492 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:16:47,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:16:47,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 33 [2024-11-14 05:16:47,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67915280] [2024-11-14 05:16:47,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:16:47,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:16:47,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:16:47,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:16:47,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=957, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:16:47,494 INFO L87 Difference]: Start difference. First operand 496 states and 1388 transitions. Second operand has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:48,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:16:48,509 INFO L93 Difference]: Finished difference Result 691 states and 1866 transitions. [2024-11-14 05:16:48,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-14 05:16:48,510 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:16:48,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:16:48,513 INFO L225 Difference]: With dead ends: 691 [2024-11-14 05:16:48,513 INFO L226 Difference]: Without dead ends: 663 [2024-11-14 05:16:48,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=366, Invalid=2184, Unknown=0, NotChecked=0, Total=2550 [2024-11-14 05:16:48,514 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 85 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:16:48,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 16 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 05:16:48,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2024-11-14 05:16:48,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 494. [2024-11-14 05:16:48,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 2.8012170385395536) internal successors, (1381), 493 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:48,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1381 transitions. [2024-11-14 05:16:48,537 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1381 transitions. Word has length 21 [2024-11-14 05:16:48,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:16:48,538 INFO L471 AbstractCegarLoop]: Abstraction has 494 states and 1381 transitions. [2024-11-14 05:16:48,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:48,538 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1381 transitions. [2024-11-14 05:16:48,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:16:48,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:16:48,545 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:16:48,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-14 05:16:48,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:48,745 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:16:48,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:16:48,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1764973774, now seen corresponding path program 31 times [2024-11-14 05:16:48,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:16:48,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945259140] [2024-11-14 05:16:48,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:16:48,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:16:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:48,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:48,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:16:48,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945259140] [2024-11-14 05:16:48,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945259140] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:16:48,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11925859] [2024-11-14 05:16:48,974 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:16:48,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:48,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:16:48,977 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:16:48,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-14 05:16:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:49,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:16:49,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:16:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:49,427 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:16:50,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:50,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11925859] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:16:50,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1552704363] [2024-11-14 05:16:50,094 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:16:50,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:16:50,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:16:50,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973454341] [2024-11-14 05:16:50,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:16:50,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:16:50,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:16:50,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:16:50,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=942, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:16:50,096 INFO L87 Difference]: Start difference. First operand 494 states and 1381 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:52,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:16:52,373 INFO L93 Difference]: Finished difference Result 794 states and 2096 transitions. [2024-11-14 05:16:52,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-14 05:16:52,374 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:16:52,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:16:52,380 INFO L225 Difference]: With dead ends: 794 [2024-11-14 05:16:52,380 INFO L226 Difference]: Without dead ends: 780 [2024-11-14 05:16:52,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1502 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=778, Invalid=4192, Unknown=0, NotChecked=0, Total=4970 [2024-11-14 05:16:52,381 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 168 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:16:52,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 25 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1434 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 05:16:52,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2024-11-14 05:16:52,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 536. [2024-11-14 05:16:52,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 2.822429906542056) internal successors, (1510), 535 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:52,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1510 transitions. [2024-11-14 05:16:52,398 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1510 transitions. Word has length 21 [2024-11-14 05:16:52,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:16:52,398 INFO L471 AbstractCegarLoop]: Abstraction has 536 states and 1510 transitions. [2024-11-14 05:16:52,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:52,399 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1510 transitions. [2024-11-14 05:16:52,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:16:52,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:16:52,400 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:16:52,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-14 05:16:52,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-14 05:16:52,601 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:16:52,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:16:52,602 INFO L85 PathProgramCache]: Analyzing trace with hash -111156828, now seen corresponding path program 32 times [2024-11-14 05:16:52,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:16:52,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213958032] [2024-11-14 05:16:52,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:16:52,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:16:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:52,856 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:52,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:16:52,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213958032] [2024-11-14 05:16:52,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213958032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:16:52,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827615562] [2024-11-14 05:16:52,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:16:52,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:52,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:16:52,860 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:16:52,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-14 05:16:52,926 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:16:52,926 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:16:52,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:16:52,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:16:53,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:53,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:16:54,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:54,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827615562] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:16:54,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [773811447] [2024-11-14 05:16:54,041 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:16:54,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:16:54,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:16:54,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568743590] [2024-11-14 05:16:54,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:16:54,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:16:54,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:16:54,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:16:54,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=934, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:16:54,043 INFO L87 Difference]: Start difference. First operand 536 states and 1510 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:59,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:16:59,279 INFO L93 Difference]: Finished difference Result 1085 states and 2726 transitions. [2024-11-14 05:16:59,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-14 05:16:59,279 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:16:59,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:16:59,282 INFO L225 Difference]: With dead ends: 1085 [2024-11-14 05:16:59,282 INFO L226 Difference]: Without dead ends: 1063 [2024-11-14 05:16:59,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4175 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1926, Invalid=10284, Unknown=0, NotChecked=0, Total=12210 [2024-11-14 05:16:59,283 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 315 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 2627 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 2757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:16:59,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 59 Invalid, 2757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2627 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-14 05:16:59,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2024-11-14 05:16:59,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 580. [2024-11-14 05:16:59,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 579 states have (on average 2.861830742659758) internal successors, (1657), 579 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:59,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1657 transitions. [2024-11-14 05:16:59,300 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1657 transitions. Word has length 21 [2024-11-14 05:16:59,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:16:59,300 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 1657 transitions. [2024-11-14 05:16:59,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:16:59,301 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1657 transitions. [2024-11-14 05:16:59,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:16:59,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:16:59,304 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:16:59,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-14 05:16:59,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-14 05:16:59,508 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:16:59,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:16:59,509 INFO L85 PathProgramCache]: Analyzing trace with hash -249684978, now seen corresponding path program 33 times [2024-11-14 05:16:59,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:16:59,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117623712] [2024-11-14 05:16:59,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:16:59,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:16:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:16:59,791 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:16:59,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:16:59,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117623712] [2024-11-14 05:16:59,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117623712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:16:59,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191010946] [2024-11-14 05:16:59,792 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:16:59,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:16:59,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:16:59,794 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:16:59,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-14 05:16:59,850 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:16:59,851 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:16:59,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:16:59,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:17:00,187 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:00,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:17:00,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:00,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191010946] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:17:00,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [843192429] [2024-11-14 05:17:00,768 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:17:00,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:17:00,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:17:00,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943738979] [2024-11-14 05:17:00,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:17:00,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:17:00,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:17:00,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:17:00,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=929, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:17:00,770 INFO L87 Difference]: Start difference. First operand 580 states and 1657 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:05,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:17:05,564 INFO L93 Difference]: Finished difference Result 1256 states and 3204 transitions. [2024-11-14 05:17:05,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-11-14 05:17:05,564 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:17:05,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:17:05,570 INFO L225 Difference]: With dead ends: 1256 [2024-11-14 05:17:05,570 INFO L226 Difference]: Without dead ends: 1198 [2024-11-14 05:17:05,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4101 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1896, Invalid=9660, Unknown=0, NotChecked=0, Total=11556 [2024-11-14 05:17:05,572 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 327 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 2291 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 2444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 2291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:17:05,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 67 Invalid, 2444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 2291 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 05:17:05,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2024-11-14 05:17:05,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 622. [2024-11-14 05:17:05,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 621 states have (on average 2.8727858293075683) internal successors, (1784), 621 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:05,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1784 transitions. [2024-11-14 05:17:05,594 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1784 transitions. Word has length 21 [2024-11-14 05:17:05,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:17:05,594 INFO L471 AbstractCegarLoop]: Abstraction has 622 states and 1784 transitions. [2024-11-14 05:17:05,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:05,594 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1784 transitions. [2024-11-14 05:17:05,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:17:05,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:17:05,596 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:17:05,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-14 05:17:05,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:17:05,800 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:17:05,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:17:05,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1591726082, now seen corresponding path program 34 times [2024-11-14 05:17:05,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:17:05,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619041824] [2024-11-14 05:17:05,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:17:05,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:17:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:17:06,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:06,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:17:06,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619041824] [2024-11-14 05:17:06,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619041824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:17:06,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003712292] [2024-11-14 05:17:06,110 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:17:06,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:17:06,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:17:06,113 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:17:06,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-14 05:17:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:17:06,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:17:06,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:17:06,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:06,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:17:07,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:07,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003712292] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:17:07,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [127283261] [2024-11-14 05:17:07,185 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:17:07,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:17:07,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:17:07,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725379277] [2024-11-14 05:17:07,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:17:07,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:17:07,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:17:07,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:17:07,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=941, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:17:07,187 INFO L87 Difference]: Start difference. First operand 622 states and 1784 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:09,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:17:09,376 INFO L93 Difference]: Finished difference Result 878 states and 2380 transitions. [2024-11-14 05:17:09,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-14 05:17:09,376 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:17:09,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:17:09,381 INFO L225 Difference]: With dead ends: 878 [2024-11-14 05:17:09,381 INFO L226 Difference]: Without dead ends: 868 [2024-11-14 05:17:09,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=701, Invalid=3589, Unknown=0, NotChecked=0, Total=4290 [2024-11-14 05:17:09,386 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 150 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:17:09,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 28 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 05:17:09,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2024-11-14 05:17:09,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 626. [2024-11-14 05:17:09,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 625 states have (on average 2.8704) internal successors, (1794), 625 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:09,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 1794 transitions. [2024-11-14 05:17:09,401 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 1794 transitions. Word has length 21 [2024-11-14 05:17:09,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:17:09,401 INFO L471 AbstractCegarLoop]: Abstraction has 626 states and 1794 transitions. [2024-11-14 05:17:09,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:09,402 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 1794 transitions. [2024-11-14 05:17:09,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:17:09,403 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:17:09,403 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:17:09,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-14 05:17:09,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:17:09,604 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:17:09,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:17:09,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1352613456, now seen corresponding path program 35 times [2024-11-14 05:17:09,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:17:09,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301165908] [2024-11-14 05:17:09,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:17:09,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:17:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:17:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:09,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:17:09,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301165908] [2024-11-14 05:17:09,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301165908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:17:09,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661776573] [2024-11-14 05:17:09,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:17:09,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:17:09,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:17:09,947 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:17:09,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-14 05:17:10,004 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:17:10,004 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:17:10,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:17:10,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:17:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:10,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:17:11,142 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:11,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661776573] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:17:11,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1150098501] [2024-11-14 05:17:11,142 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:17:11,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:17:11,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:17:11,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733068563] [2024-11-14 05:17:11,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:17:11,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:17:11,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:17:11,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:17:11,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=955, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:17:11,144 INFO L87 Difference]: Start difference. First operand 626 states and 1794 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:16,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:17:16,241 INFO L93 Difference]: Finished difference Result 1125 states and 2981 transitions. [2024-11-14 05:17:16,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-14 05:17:16,242 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:17:16,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:17:16,246 INFO L225 Difference]: With dead ends: 1125 [2024-11-14 05:17:16,246 INFO L226 Difference]: Without dead ends: 1111 [2024-11-14 05:17:16,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3285 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1375, Invalid=8525, Unknown=0, NotChecked=0, Total=9900 [2024-11-14 05:17:16,248 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 338 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 2518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:17:16,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 59 Invalid, 2518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-14 05:17:16,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2024-11-14 05:17:16,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 664. [2024-11-14 05:17:16,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 663 states have (on average 2.8763197586727) internal successors, (1907), 663 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:16,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1907 transitions. [2024-11-14 05:17:16,276 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1907 transitions. Word has length 21 [2024-11-14 05:17:16,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:17:16,276 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 1907 transitions. [2024-11-14 05:17:16,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:16,276 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1907 transitions. [2024-11-14 05:17:16,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:17:16,278 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:17:16,278 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:17:16,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-14 05:17:16,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:17:16,478 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:17:16,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:17:16,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1491141606, now seen corresponding path program 36 times [2024-11-14 05:17:16,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:17:16,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586560355] [2024-11-14 05:17:16,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:17:16,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:17:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:17:16,757 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:16,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:17:16,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586560355] [2024-11-14 05:17:16,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586560355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:17:16,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436070101] [2024-11-14 05:17:16,757 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:17:16,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:17:16,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:17:16,759 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:17:16,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-14 05:17:16,817 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:17:16,817 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:17:16,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:17:16,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:17:17,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:17,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:17:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:17,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436070101] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:17:17,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1493816048] [2024-11-14 05:17:17,977 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:17:17,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:17:17,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:17:17,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570216007] [2024-11-14 05:17:17,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:17:17,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:17:17,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:17:17,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:17:17,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=952, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:17:17,980 INFO L87 Difference]: Start difference. First operand 664 states and 1907 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:23,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:17:23,907 INFO L93 Difference]: Finished difference Result 1205 states and 3189 transitions. [2024-11-14 05:17:23,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-14 05:17:23,907 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:17:23,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:17:23,911 INFO L225 Difference]: With dead ends: 1205 [2024-11-14 05:17:23,911 INFO L226 Difference]: Without dead ends: 1171 [2024-11-14 05:17:23,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4226 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1591, Invalid=10399, Unknown=0, NotChecked=0, Total=11990 [2024-11-14 05:17:23,913 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 333 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 2299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:17:23,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 60 Invalid, 2299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2193 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-14 05:17:23,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2024-11-14 05:17:23,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 706. [2024-11-14 05:17:23,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 705 states have (on average 2.8822695035460995) internal successors, (2032), 705 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:23,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2032 transitions. [2024-11-14 05:17:23,934 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2032 transitions. Word has length 21 [2024-11-14 05:17:23,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:17:23,935 INFO L471 AbstractCegarLoop]: Abstraction has 706 states and 2032 transitions. [2024-11-14 05:17:23,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:23,935 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2032 transitions. [2024-11-14 05:17:23,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:17:23,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:17:23,937 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:17:23,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-14 05:17:24,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-14 05:17:24,137 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:17:24,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:17:24,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1945545806, now seen corresponding path program 37 times [2024-11-14 05:17:24,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:17:24,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121624773] [2024-11-14 05:17:24,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:17:24,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:17:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:17:24,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:24,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:17:24,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121624773] [2024-11-14 05:17:24,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121624773] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:17:24,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060403363] [2024-11-14 05:17:24,374 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:17:24,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:17:24,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:17:24,376 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:17:24,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-14 05:17:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:17:24,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:17:24,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:17:24,792 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:24,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:17:25,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:25,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060403363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:17:25,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1333284056] [2024-11-14 05:17:25,562 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:17:25,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:17:25,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:17:25,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004823379] [2024-11-14 05:17:25,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:17:25,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:17:25,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:17:25,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:17:25,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:17:25,564 INFO L87 Difference]: Start difference. First operand 706 states and 2032 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:29,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:17:29,730 INFO L93 Difference]: Finished difference Result 1110 states and 2963 transitions. [2024-11-14 05:17:29,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-14 05:17:29,731 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:17:29,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:17:29,737 INFO L225 Difference]: With dead ends: 1110 [2024-11-14 05:17:29,737 INFO L226 Difference]: Without dead ends: 1086 [2024-11-14 05:17:29,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2213 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=967, Invalid=6343, Unknown=0, NotChecked=0, Total=7310 [2024-11-14 05:17:29,739 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 323 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1896 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:17:29,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 33 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1896 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 05:17:29,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2024-11-14 05:17:29,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 712. [2024-11-14 05:17:29,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 2.8720112517580874) internal successors, (2042), 711 states have internal predecessors, (2042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:29,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 2042 transitions. [2024-11-14 05:17:29,789 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 2042 transitions. Word has length 21 [2024-11-14 05:17:29,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:17:29,789 INFO L471 AbstractCegarLoop]: Abstraction has 712 states and 2042 transitions. [2024-11-14 05:17:29,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:29,790 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 2042 transitions. [2024-11-14 05:17:29,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:17:29,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:17:29,792 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:17:29,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-14 05:17:29,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-14 05:17:29,993 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:17:29,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:17:29,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1630414472, now seen corresponding path program 38 times [2024-11-14 05:17:29,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:17:29,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043894358] [2024-11-14 05:17:29,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:17:29,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:17:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:17:30,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:30,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:17:30,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043894358] [2024-11-14 05:17:30,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043894358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:17:30,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673251137] [2024-11-14 05:17:30,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:17:30,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:17:30,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:17:30,254 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:17:30,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-14 05:17:30,312 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:17:30,312 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:17:30,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:17:30,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:17:30,688 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:30,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:17:31,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:31,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673251137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:17:31,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1229106675] [2024-11-14 05:17:31,414 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:17:31,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:17:31,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:17:31,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92282852] [2024-11-14 05:17:31,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:17:31,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:17:31,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:17:31,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:17:31,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:17:31,415 INFO L87 Difference]: Start difference. First operand 712 states and 2042 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:38,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:17:38,676 INFO L93 Difference]: Finished difference Result 1537 states and 3987 transitions. [2024-11-14 05:17:38,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2024-11-14 05:17:38,676 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:17:38,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:17:38,683 INFO L225 Difference]: With dead ends: 1537 [2024-11-14 05:17:38,683 INFO L226 Difference]: Without dead ends: 1503 [2024-11-14 05:17:38,684 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6552 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=2256, Invalid=14774, Unknown=0, NotChecked=0, Total=17030 [2024-11-14 05:17:38,685 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 446 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 2931 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 3059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:17:38,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 68 Invalid, 3059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2931 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-14 05:17:38,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2024-11-14 05:17:38,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 762. [2024-11-14 05:17:38,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 761 states have (on average 2.867279894875164) internal successors, (2182), 761 states have internal predecessors, (2182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:38,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 2182 transitions. [2024-11-14 05:17:38,714 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 2182 transitions. Word has length 21 [2024-11-14 05:17:38,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:17:38,715 INFO L471 AbstractCegarLoop]: Abstraction has 762 states and 2182 transitions. [2024-11-14 05:17:38,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:38,715 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 2182 transitions. [2024-11-14 05:17:38,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:17:38,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:17:38,717 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:17:38,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-14 05:17:38,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-14 05:17:38,918 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:17:38,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:17:38,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1806272940, now seen corresponding path program 39 times [2024-11-14 05:17:38,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:17:38,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916487184] [2024-11-14 05:17:38,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:17:38,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:17:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:17:39,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:39,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:17:39,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916487184] [2024-11-14 05:17:39,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916487184] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:17:39,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838032201] [2024-11-14 05:17:39,164 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:17:39,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:17:39,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:17:39,166 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:17:39,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-14 05:17:39,219 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:17:39,219 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:17:39,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:17:39,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:17:39,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:39,631 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:17:40,366 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:40,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838032201] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:17:40,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [173716345] [2024-11-14 05:17:40,367 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:17:40,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:17:40,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:17:40,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113910978] [2024-11-14 05:17:40,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:17:40,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:17:40,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:17:40,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:17:40,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=961, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:17:40,369 INFO L87 Difference]: Start difference. First operand 762 states and 2182 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:45,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:17:45,075 INFO L93 Difference]: Finished difference Result 1329 states and 3483 transitions. [2024-11-14 05:17:45,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-14 05:17:45,075 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:17:45,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:17:45,081 INFO L225 Difference]: With dead ends: 1329 [2024-11-14 05:17:45,081 INFO L226 Difference]: Without dead ends: 1305 [2024-11-14 05:17:45,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3292 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1263, Invalid=8439, Unknown=0, NotChecked=0, Total=9702 [2024-11-14 05:17:45,083 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 438 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1906 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 2003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:17:45,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 45 Invalid, 2003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1906 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 05:17:45,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2024-11-14 05:17:45,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 756. [2024-11-14 05:17:45,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 755 states have (on average 2.8675496688741724) internal successors, (2165), 755 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:45,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 2165 transitions. [2024-11-14 05:17:45,121 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 2165 transitions. Word has length 21 [2024-11-14 05:17:45,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:17:45,121 INFO L471 AbstractCegarLoop]: Abstraction has 756 states and 2165 transitions. [2024-11-14 05:17:45,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:45,122 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 2165 transitions. [2024-11-14 05:17:45,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:17:45,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:17:45,124 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:17:45,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-11-14 05:17:45,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:17:45,325 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:17:45,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:17:45,325 INFO L85 PathProgramCache]: Analyzing trace with hash 119054636, now seen corresponding path program 40 times [2024-11-14 05:17:45,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:17:45,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953545809] [2024-11-14 05:17:45,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:17:45,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:17:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:17:45,587 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:45,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:17:45,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953545809] [2024-11-14 05:17:45,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953545809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:17:45,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537559314] [2024-11-14 05:17:45,587 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:17:45,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:17:45,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:17:45,589 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:17:45,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-14 05:17:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:17:45,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:17:45,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:17:46,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:46,034 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:17:46,772 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:46,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537559314] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:17:46,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [135804677] [2024-11-14 05:17:46,772 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:17:46,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:17:46,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:17:46,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256996379] [2024-11-14 05:17:46,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:17:46,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:17:46,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:17:46,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:17:46,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:17:46,774 INFO L87 Difference]: Start difference. First operand 756 states and 2165 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:51,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:17:51,766 INFO L93 Difference]: Finished difference Result 1309 states and 3529 transitions. [2024-11-14 05:17:51,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-14 05:17:51,766 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:17:51,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:17:51,770 INFO L225 Difference]: With dead ends: 1309 [2024-11-14 05:17:51,770 INFO L226 Difference]: Without dead ends: 1295 [2024-11-14 05:17:51,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3319 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1334, Invalid=8368, Unknown=0, NotChecked=0, Total=9702 [2024-11-14 05:17:51,771 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 332 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 2503 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 2647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 2503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:17:51,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 45 Invalid, 2647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 2503 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-14 05:17:51,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2024-11-14 05:17:51,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 762. [2024-11-14 05:17:51,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 761 states have (on average 2.864651773981603) internal successors, (2180), 761 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:51,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 2180 transitions. [2024-11-14 05:17:51,800 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 2180 transitions. Word has length 21 [2024-11-14 05:17:51,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:17:51,801 INFO L471 AbstractCegarLoop]: Abstraction has 762 states and 2180 transitions. [2024-11-14 05:17:51,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:51,801 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 2180 transitions. [2024-11-14 05:17:51,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:17:51,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:17:51,803 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:17:51,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-14 05:17:52,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:17:52,004 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:17:52,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:17:52,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1074618074, now seen corresponding path program 41 times [2024-11-14 05:17:52,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:17:52,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117410106] [2024-11-14 05:17:52,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:17:52,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:17:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:17:52,291 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:52,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:17:52,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117410106] [2024-11-14 05:17:52,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117410106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:17:52,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715690509] [2024-11-14 05:17:52,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:17:52,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:17:52,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:17:52,294 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:17:52,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-14 05:17:52,351 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:17:52,351 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:17:52,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:17:52,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:17:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:52,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:17:53,484 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:53,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715690509] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:17:53,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2033461700] [2024-11-14 05:17:53,484 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:17:53,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:17:53,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:17:53,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800084732] [2024-11-14 05:17:53,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:17:53,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:17:53,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:17:53,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:17:53,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=953, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:17:53,486 INFO L87 Difference]: Start difference. First operand 762 states and 2180 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:57,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:17:57,994 INFO L93 Difference]: Finished difference Result 1336 states and 3531 transitions. [2024-11-14 05:17:57,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-14 05:17:57,995 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:17:57,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:17:57,998 INFO L225 Difference]: With dead ends: 1336 [2024-11-14 05:17:57,998 INFO L226 Difference]: Without dead ends: 1302 [2024-11-14 05:17:57,999 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4315 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1614, Invalid=10596, Unknown=0, NotChecked=0, Total=12210 [2024-11-14 05:17:57,999 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 381 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 2458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:17:58,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 88 Invalid, 2458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 05:17:58,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2024-11-14 05:17:58,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 770. [2024-11-14 05:17:58,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 2.858257477243173) internal successors, (2198), 769 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:58,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 2198 transitions. [2024-11-14 05:17:58,018 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 2198 transitions. Word has length 21 [2024-11-14 05:17:58,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:17:58,018 INFO L471 AbstractCegarLoop]: Abstraction has 770 states and 2198 transitions. [2024-11-14 05:17:58,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:17:58,018 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 2198 transitions. [2024-11-14 05:17:58,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:17:58,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:17:58,020 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:17:58,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-14 05:17:58,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:17:58,220 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:17:58,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:17:58,221 INFO L85 PathProgramCache]: Analyzing trace with hash 216338190, now seen corresponding path program 42 times [2024-11-14 05:17:58,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:17:58,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605641465] [2024-11-14 05:17:58,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:17:58,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:17:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:17:58,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:58,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:17:58,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605641465] [2024-11-14 05:17:58,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605641465] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:17:58,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339338116] [2024-11-14 05:17:58,503 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:17:58,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:17:58,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:17:58,506 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:17:58,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-14 05:17:58,573 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:17:58,574 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:17:58,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:17:58,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:17:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:58,997 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:17:59,792 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:17:59,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339338116] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:17:59,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1370593798] [2024-11-14 05:17:59,792 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:17:59,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:17:59,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:17:59,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884784441] [2024-11-14 05:17:59,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:17:59,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:17:59,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:17:59,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:17:59,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=969, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:17:59,794 INFO L87 Difference]: Start difference. First operand 770 states and 2198 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:03,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:18:03,767 INFO L93 Difference]: Finished difference Result 1195 states and 3187 transitions. [2024-11-14 05:18:03,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-14 05:18:03,768 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:18:03,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:18:03,771 INFO L225 Difference]: With dead ends: 1195 [2024-11-14 05:18:03,772 INFO L226 Difference]: Without dead ends: 1171 [2024-11-14 05:18:03,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2267 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=952, Invalid=6530, Unknown=0, NotChecked=0, Total=7482 [2024-11-14 05:18:03,773 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 282 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 2463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:18:03,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 49 Invalid, 2463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 05:18:03,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2024-11-14 05:18:03,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 754. [2024-11-14 05:18:03,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 2.855245683930943) internal successors, (2150), 753 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:03,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 2150 transitions. [2024-11-14 05:18:03,793 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 2150 transitions. Word has length 21 [2024-11-14 05:18:03,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:18:03,793 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 2150 transitions. [2024-11-14 05:18:03,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:03,793 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 2150 transitions. [2024-11-14 05:18:03,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:18:03,795 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:18:03,795 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:18:03,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-14 05:18:03,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:18:03,999 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:18:04,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:18:04,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1656683162, now seen corresponding path program 43 times [2024-11-14 05:18:04,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:18:04,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859119562] [2024-11-14 05:18:04,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:18:04,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:18:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:18:04,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:04,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:18:04,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859119562] [2024-11-14 05:18:04,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859119562] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:18:04,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898335373] [2024-11-14 05:18:04,267 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:18:04,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:18:04,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:18:04,269 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:18:04,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-14 05:18:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:18:04,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:18:04,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:18:04,705 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:04,706 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:18:05,345 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:05,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898335373] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:18:05,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1210429557] [2024-11-14 05:18:05,346 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:18:05,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:18:05,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:18:05,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592197470] [2024-11-14 05:18:05,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:18:05,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:18:05,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:18:05,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:18:05,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=921, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:18:05,348 INFO L87 Difference]: Start difference. First operand 754 states and 2150 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:09,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:18:09,619 INFO L93 Difference]: Finished difference Result 1371 states and 3617 transitions. [2024-11-14 05:18:09,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-14 05:18:09,619 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:18:09,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:18:09,626 INFO L225 Difference]: With dead ends: 1371 [2024-11-14 05:18:09,626 INFO L226 Difference]: Without dead ends: 1321 [2024-11-14 05:18:09,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3359 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1659, Invalid=8043, Unknown=0, NotChecked=0, Total=9702 [2024-11-14 05:18:09,629 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 287 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 2167 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 2274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:18:09,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 60 Invalid, 2274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2167 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-14 05:18:09,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2024-11-14 05:18:09,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 738. [2024-11-14 05:18:09,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 737 states have (on average 2.8385345997286295) internal successors, (2092), 737 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:09,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 2092 transitions. [2024-11-14 05:18:09,655 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 2092 transitions. Word has length 21 [2024-11-14 05:18:09,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:18:09,655 INFO L471 AbstractCegarLoop]: Abstraction has 738 states and 2092 transitions. [2024-11-14 05:18:09,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:09,656 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 2092 transitions. [2024-11-14 05:18:09,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:18:09,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:18:09,658 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:18:09,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-11-14 05:18:09,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-14 05:18:09,859 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:18:09,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:18:09,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1342488048, now seen corresponding path program 44 times [2024-11-14 05:18:09,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:18:09,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220151659] [2024-11-14 05:18:09,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:18:09,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:18:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:18:10,154 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:10,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:18:10,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220151659] [2024-11-14 05:18:10,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220151659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:18:10,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712643141] [2024-11-14 05:18:10,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:18:10,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:18:10,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:18:10,157 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:18:10,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-14 05:18:10,229 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 05:18:10,229 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:18:10,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:18:10,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:18:10,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:10,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:18:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:11,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712643141] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:18:11,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [276431824] [2024-11-14 05:18:11,295 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:18:11,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:18:11,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:18:11,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695425609] [2024-11-14 05:18:11,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:18:11,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:18:11,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:18:11,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:18:11,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=952, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:18:11,297 INFO L87 Difference]: Start difference. First operand 738 states and 2092 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:14,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:18:14,696 INFO L93 Difference]: Finished difference Result 1142 states and 3028 transitions. [2024-11-14 05:18:14,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-14 05:18:14,697 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:18:14,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:18:14,701 INFO L225 Difference]: With dead ends: 1142 [2024-11-14 05:18:14,702 INFO L226 Difference]: Without dead ends: 1124 [2024-11-14 05:18:14,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2467 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1155, Invalid=6677, Unknown=0, NotChecked=0, Total=7832 [2024-11-14 05:18:14,703 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 151 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:18:14,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 14 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1782 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 05:18:14,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2024-11-14 05:18:14,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 760. [2024-11-14 05:18:14,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 759 states have (on average 2.841897233201581) internal successors, (2157), 759 states have internal predecessors, (2157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:14,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 2157 transitions. [2024-11-14 05:18:14,726 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 2157 transitions. Word has length 21 [2024-11-14 05:18:14,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:18:14,726 INFO L471 AbstractCegarLoop]: Abstraction has 760 states and 2157 transitions. [2024-11-14 05:18:14,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:14,726 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 2157 transitions. [2024-11-14 05:18:14,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:18:14,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:18:14,728 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:18:14,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-14 05:18:14,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:18:14,932 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:18:14,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:18:14,933 INFO L85 PathProgramCache]: Analyzing trace with hash -533642554, now seen corresponding path program 45 times [2024-11-14 05:18:14,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:18:14,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887130135] [2024-11-14 05:18:14,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:18:14,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:18:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:18:15,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:15,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:18:15,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887130135] [2024-11-14 05:18:15,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887130135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:18:15,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173706799] [2024-11-14 05:18:15,235 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:18:15,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:18:15,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:18:15,237 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:18:15,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-14 05:18:15,303 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:18:15,303 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:18:15,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:18:15,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:18:15,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:15,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:18:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:16,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173706799] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:18:16,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1142429263] [2024-11-14 05:18:16,371 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:18:16,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:18:16,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:18:16,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473116889] [2024-11-14 05:18:16,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:18:16,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:18:16,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:18:16,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:18:16,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=935, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:18:16,373 INFO L87 Difference]: Start difference. First operand 760 states and 2157 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:22,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:18:22,032 INFO L93 Difference]: Finished difference Result 1493 states and 3892 transitions. [2024-11-14 05:18:22,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2024-11-14 05:18:22,032 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:18:22,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:18:22,037 INFO L225 Difference]: With dead ends: 1493 [2024-11-14 05:18:22,037 INFO L226 Difference]: Without dead ends: 1471 [2024-11-14 05:18:22,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4459 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1987, Invalid=10895, Unknown=0, NotChecked=0, Total=12882 [2024-11-14 05:18:22,038 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 338 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 2547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:18:22,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 52 Invalid, 2547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2420 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-14 05:18:22,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2024-11-14 05:18:22,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 820. [2024-11-14 05:18:22,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 819 states have (on average 2.8803418803418803) internal successors, (2359), 819 states have internal predecessors, (2359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:22,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 2359 transitions. [2024-11-14 05:18:22,066 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 2359 transitions. Word has length 21 [2024-11-14 05:18:22,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:18:22,066 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 2359 transitions. [2024-11-14 05:18:22,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:22,066 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 2359 transitions. [2024-11-14 05:18:22,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:18:22,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:18:22,068 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:18:22,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-14 05:18:22,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-14 05:18:22,269 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:18:22,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:18:22,270 INFO L85 PathProgramCache]: Analyzing trace with hash -672170704, now seen corresponding path program 46 times [2024-11-14 05:18:22,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:18:22,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37141995] [2024-11-14 05:18:22,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:18:22,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:18:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:18:22,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:22,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:18:22,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37141995] [2024-11-14 05:18:22,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37141995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:18:22,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395844872] [2024-11-14 05:18:22,568 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:18:22,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:18:22,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:18:22,572 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:18:22,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-14 05:18:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:18:22,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:18:22,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:18:23,021 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:23,021 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:18:23,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:23,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395844872] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:18:23,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1134462955] [2024-11-14 05:18:23,651 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:18:23,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:18:23,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:18:23,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836377806] [2024-11-14 05:18:23,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:18:23,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:18:23,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:18:23,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:18:23,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=930, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:18:23,653 INFO L87 Difference]: Start difference. First operand 820 states and 2359 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:28,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:18:28,028 INFO L93 Difference]: Finished difference Result 1515 states and 4011 transitions. [2024-11-14 05:18:28,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-14 05:18:28,029 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:18:28,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:18:28,031 INFO L225 Difference]: With dead ends: 1515 [2024-11-14 05:18:28,031 INFO L226 Difference]: Without dead ends: 1459 [2024-11-14 05:18:28,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3497 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1650, Invalid=8250, Unknown=0, NotChecked=0, Total=9900 [2024-11-14 05:18:28,033 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 310 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2225 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 2342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:18:28,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 65 Invalid, 2342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 2225 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-14 05:18:28,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2024-11-14 05:18:28,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 786. [2024-11-14 05:18:28,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 785 states have (on average 2.8560509554140125) internal successors, (2242), 785 states have internal predecessors, (2242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:28,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 2242 transitions. [2024-11-14 05:18:28,052 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 2242 transitions. Word has length 21 [2024-11-14 05:18:28,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:18:28,052 INFO L471 AbstractCegarLoop]: Abstraction has 786 states and 2242 transitions. [2024-11-14 05:18:28,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:28,053 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 2242 transitions. [2024-11-14 05:18:28,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:18:28,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:18:28,055 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:18:28,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-14 05:18:28,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-14 05:18:28,272 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:18:28,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:18:28,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1169240356, now seen corresponding path program 47 times [2024-11-14 05:18:28,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:18:28,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543980760] [2024-11-14 05:18:28,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:18:28,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:18:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:18:28,513 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:28,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:18:28,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543980760] [2024-11-14 05:18:28,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543980760] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:18:28,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575860039] [2024-11-14 05:18:28,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:18:28,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:18:28,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:18:28,516 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:18:28,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-14 05:18:28,584 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 05:18:28,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:18:28,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:18:28,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:18:28,953 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:28,954 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:18:29,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:29,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575860039] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:18:29,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [691687393] [2024-11-14 05:18:29,562 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:18:29,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:18:29,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:18:29,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245081271] [2024-11-14 05:18:29,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:18:29,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:18:29,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:18:29,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:18:29,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:18:29,564 INFO L87 Difference]: Start difference. First operand 786 states and 2242 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:32,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:18:32,408 INFO L93 Difference]: Finished difference Result 1090 states and 2968 transitions. [2024-11-14 05:18:32,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-14 05:18:32,408 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:18:32,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:18:32,410 INFO L225 Difference]: With dead ends: 1090 [2024-11-14 05:18:32,410 INFO L226 Difference]: Without dead ends: 1080 [2024-11-14 05:18:32,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1618 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=819, Invalid=4583, Unknown=0, NotChecked=0, Total=5402 [2024-11-14 05:18:32,411 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 121 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 2046 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 2094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:18:32,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 20 Invalid, 2094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2046 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 05:18:32,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2024-11-14 05:18:32,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 772. [2024-11-14 05:18:32,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 771 states have (on average 2.846952010376135) internal successors, (2195), 771 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:32,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 2195 transitions. [2024-11-14 05:18:32,425 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 2195 transitions. Word has length 21 [2024-11-14 05:18:32,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:18:32,425 INFO L471 AbstractCegarLoop]: Abstraction has 772 states and 2195 transitions. [2024-11-14 05:18:32,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:32,426 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 2195 transitions. [2024-11-14 05:18:32,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:18:32,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:18:32,427 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:18:32,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-11-14 05:18:32,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-14 05:18:32,627 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:18:32,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:18:32,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1775099182, now seen corresponding path program 48 times [2024-11-14 05:18:32,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:18:32,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071081385] [2024-11-14 05:18:32,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:18:32,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:18:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:18:32,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:32,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:18:32,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071081385] [2024-11-14 05:18:32,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071081385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:18:32,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721011142] [2024-11-14 05:18:32,860 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:18:32,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:18:32,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:18:32,862 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:18:32,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-14 05:18:32,906 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:18:32,906 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:18:32,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:18:32,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:18:33,220 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:33,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:18:33,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:33,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721011142] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:18:33,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1678623759] [2024-11-14 05:18:33,885 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:18:33,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:18:33,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:18:33,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107793101] [2024-11-14 05:18:33,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:18:33,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:18:33,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:18:33,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:18:33,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=957, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:18:33,887 INFO L87 Difference]: Start difference. First operand 772 states and 2195 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:38,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:18:38,100 INFO L93 Difference]: Finished difference Result 1345 states and 3568 transitions. [2024-11-14 05:18:38,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-14 05:18:38,101 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:18:38,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:18:38,103 INFO L225 Difference]: With dead ends: 1345 [2024-11-14 05:18:38,103 INFO L226 Difference]: Without dead ends: 1331 [2024-11-14 05:18:38,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2706 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1172, Invalid=7384, Unknown=0, NotChecked=0, Total=8556 [2024-11-14 05:18:38,104 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 275 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 2569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:18:38,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 60 Invalid, 2569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-14 05:18:38,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2024-11-14 05:18:38,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 780. [2024-11-14 05:18:38,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 2.8485237483953787) internal successors, (2219), 779 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:38,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 2219 transitions. [2024-11-14 05:18:38,128 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 2219 transitions. Word has length 21 [2024-11-14 05:18:38,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:18:38,128 INFO L471 AbstractCegarLoop]: Abstraction has 780 states and 2219 transitions. [2024-11-14 05:18:38,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:38,129 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 2219 transitions. [2024-11-14 05:18:38,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:18:38,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:18:38,130 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:18:38,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-11-14 05:18:38,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-14 05:18:38,331 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:18:38,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:18:38,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1913627332, now seen corresponding path program 49 times [2024-11-14 05:18:38,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:18:38,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199529846] [2024-11-14 05:18:38,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:18:38,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:18:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:18:38,565 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:38,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:18:38,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199529846] [2024-11-14 05:18:38,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199529846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:18:38,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858099987] [2024-11-14 05:18:38,566 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:18:38,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:18:38,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:18:38,567 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:18:38,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-14 05:18:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:18:38,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:18:38,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:18:38,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:38,938 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:18:39,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:39,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858099987] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:18:39,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [9154140] [2024-11-14 05:18:39,587 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:18:39,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:18:39,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:18:39,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837045225] [2024-11-14 05:18:39,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:18:39,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:18:39,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:18:39,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:18:39,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:18:39,588 INFO L87 Difference]: Start difference. First operand 780 states and 2219 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:43,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:18:43,723 INFO L93 Difference]: Finished difference Result 1344 states and 3549 transitions. [2024-11-14 05:18:43,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-14 05:18:43,724 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:18:43,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:18:43,726 INFO L225 Difference]: With dead ends: 1344 [2024-11-14 05:18:43,726 INFO L226 Difference]: Without dead ends: 1310 [2024-11-14 05:18:43,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3343 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1374, Invalid=8726, Unknown=0, NotChecked=0, Total=10100 [2024-11-14 05:18:43,727 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 265 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 2462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:18:43,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 72 Invalid, 2462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-14 05:18:43,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2024-11-14 05:18:43,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 790. [2024-11-14 05:18:43,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 789 states have (on average 2.844106463878327) internal successors, (2244), 789 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:43,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 2244 transitions. [2024-11-14 05:18:43,743 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 2244 transitions. Word has length 21 [2024-11-14 05:18:43,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:18:43,743 INFO L471 AbstractCegarLoop]: Abstraction has 790 states and 2244 transitions. [2024-11-14 05:18:43,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:43,743 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 2244 transitions. [2024-11-14 05:18:43,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:18:43,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:18:43,745 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:18:43,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-11-14 05:18:43,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-11-14 05:18:43,945 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:18:43,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:18:43,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1523060080, now seen corresponding path program 50 times [2024-11-14 05:18:43,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:18:43,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417351992] [2024-11-14 05:18:43,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:18:43,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:18:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:18:44,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:44,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:18:44,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417351992] [2024-11-14 05:18:44,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417351992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:18:44,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935929270] [2024-11-14 05:18:44,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:18:44,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:18:44,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:18:44,149 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:18:44,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-14 05:18:44,197 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:18:44,197 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:18:44,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:18:44,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:18:44,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:44,522 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:18:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:45,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935929270] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:18:45,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1007549752] [2024-11-14 05:18:45,158 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:18:45,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:18:45,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:18:45,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860795107] [2024-11-14 05:18:45,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:18:45,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:18:45,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:18:45,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:18:45,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:18:45,159 INFO L87 Difference]: Start difference. First operand 790 states and 2244 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:48,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:18:48,283 INFO L93 Difference]: Finished difference Result 1180 states and 3148 transitions. [2024-11-14 05:18:48,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-14 05:18:48,283 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:18:48,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:18:48,286 INFO L225 Difference]: With dead ends: 1180 [2024-11-14 05:18:48,287 INFO L226 Difference]: Without dead ends: 1156 [2024-11-14 05:18:48,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2003 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=903, Invalid=6069, Unknown=0, NotChecked=0, Total=6972 [2024-11-14 05:18:48,288 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 225 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:18:48,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 44 Invalid, 1976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 05:18:48,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2024-11-14 05:18:48,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 768. [2024-11-14 05:18:48,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 767 states have (on average 2.8435462842242503) internal successors, (2181), 767 states have internal predecessors, (2181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:48,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 2181 transitions. [2024-11-14 05:18:48,303 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 2181 transitions. Word has length 21 [2024-11-14 05:18:48,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:18:48,303 INFO L471 AbstractCegarLoop]: Abstraction has 768 states and 2181 transitions. [2024-11-14 05:18:48,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:48,303 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 2181 transitions. [2024-11-14 05:18:48,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:18:48,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:18:48,304 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:18:48,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-11-14 05:18:48,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:18:48,505 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:18:48,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:18:48,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1646127434, now seen corresponding path program 51 times [2024-11-14 05:18:48,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:18:48,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653472324] [2024-11-14 05:18:48,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:18:48,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:18:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:18:48,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:48,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:18:48,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653472324] [2024-11-14 05:18:48,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653472324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:18:48,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524432826] [2024-11-14 05:18:48,725 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:18:48,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:18:48,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:18:48,727 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:18:48,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-14 05:18:48,775 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:18:48,775 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:18:48,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:18:48,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:18:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:49,104 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:18:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:49,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524432826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:18:49,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1365856302] [2024-11-14 05:18:49,760 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:18:49,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:18:49,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:18:49,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352514665] [2024-11-14 05:18:49,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:18:49,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:18:49,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:18:49,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:18:49,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=944, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:18:49,762 INFO L87 Difference]: Start difference. First operand 768 states and 2181 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:53,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:18:53,025 INFO L93 Difference]: Finished difference Result 1313 states and 3522 transitions. [2024-11-14 05:18:53,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-14 05:18:53,026 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:18:53,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:18:53,028 INFO L225 Difference]: With dead ends: 1313 [2024-11-14 05:18:53,028 INFO L226 Difference]: Without dead ends: 1299 [2024-11-14 05:18:53,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2784 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1219, Invalid=7523, Unknown=0, NotChecked=0, Total=8742 [2024-11-14 05:18:53,029 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 272 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:18:53,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 46 Invalid, 1773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1675 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 05:18:53,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2024-11-14 05:18:53,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 788. [2024-11-14 05:18:53,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 2.8449809402795427) internal successors, (2239), 787 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:53,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 2239 transitions. [2024-11-14 05:18:53,044 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 2239 transitions. Word has length 21 [2024-11-14 05:18:53,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:18:53,044 INFO L471 AbstractCegarLoop]: Abstraction has 788 states and 2239 transitions. [2024-11-14 05:18:53,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:53,045 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 2239 transitions. [2024-11-14 05:18:53,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:18:53,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:18:53,046 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:18:53,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-11-14 05:18:53,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:18:53,246 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:18:53,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:18:53,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1507599284, now seen corresponding path program 52 times [2024-11-14 05:18:53,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:18:53,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798761694] [2024-11-14 05:18:53,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:18:53,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:18:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:18:53,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:53,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:18:53,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798761694] [2024-11-14 05:18:53,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798761694] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:18:53,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439673949] [2024-11-14 05:18:53,475 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:18:53,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:18:53,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:18:53,476 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:18:53,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-14 05:18:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:18:53,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:18:53,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:18:53,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:53,850 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:18:54,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:54,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439673949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:18:54,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1590570421] [2024-11-14 05:18:54,422 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:18:54,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:18:54,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:18:54,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654772080] [2024-11-14 05:18:54,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:18:54,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:18:54,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:18:54,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:18:54,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=938, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:18:54,423 INFO L87 Difference]: Start difference. First operand 788 states and 2239 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:57,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:18:57,210 INFO L93 Difference]: Finished difference Result 1226 states and 3269 transitions. [2024-11-14 05:18:57,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-14 05:18:57,210 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:18:57,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:18:57,212 INFO L225 Difference]: With dead ends: 1226 [2024-11-14 05:18:57,212 INFO L226 Difference]: Without dead ends: 1196 [2024-11-14 05:18:57,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2133 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=998, Invalid=5808, Unknown=0, NotChecked=0, Total=6806 [2024-11-14 05:18:57,213 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 225 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 2038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:18:57,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 65 Invalid, 2038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 05:18:57,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2024-11-14 05:18:57,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 784. [2024-11-14 05:18:57,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 2.839080459770115) internal successors, (2223), 783 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:57,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 2223 transitions. [2024-11-14 05:18:57,226 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 2223 transitions. Word has length 21 [2024-11-14 05:18:57,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:18:57,226 INFO L471 AbstractCegarLoop]: Abstraction has 784 states and 2223 transitions. [2024-11-14 05:18:57,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:18:57,226 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 2223 transitions. [2024-11-14 05:18:57,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:18:57,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:18:57,227 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:18:57,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-11-14 05:18:57,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-11-14 05:18:57,427 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:18:57,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:18:57,428 INFO L85 PathProgramCache]: Analyzing trace with hash -506702224, now seen corresponding path program 53 times [2024-11-14 05:18:57,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:18:57,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944659051] [2024-11-14 05:18:57,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:18:57,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:18:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:18:57,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:57,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:18:57,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944659051] [2024-11-14 05:18:57,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944659051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:18:57,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310271591] [2024-11-14 05:18:57,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:18:57,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:18:57,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:18:57,604 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:18:57,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-14 05:18:57,654 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:18:57,654 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:18:57,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:18:57,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:18:57,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:57,973 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:18:58,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:18:58,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310271591] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:18:58,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1224835171] [2024-11-14 05:18:58,480 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:18:58,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:18:58,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:18:58,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179005784] [2024-11-14 05:18:58,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:18:58,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:18:58,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:18:58,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:18:58,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=944, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:18:58,481 INFO L87 Difference]: Start difference. First operand 784 states and 2223 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:19:02,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:19:02,069 INFO L93 Difference]: Finished difference Result 1502 states and 4005 transitions. [2024-11-14 05:19:02,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-14 05:19:02,070 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:19:02,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:19:02,072 INFO L225 Difference]: With dead ends: 1502 [2024-11-14 05:19:02,072 INFO L226 Difference]: Without dead ends: 1484 [2024-11-14 05:19:02,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3220 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1335, Invalid=8171, Unknown=0, NotChecked=0, Total=9506 [2024-11-14 05:19:02,073 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 294 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 2153 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:19:02,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 56 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2153 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 05:19:02,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2024-11-14 05:19:02,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 810. [2024-11-14 05:19:02,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 809 states have (on average 2.8553770086526575) internal successors, (2310), 809 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:19:02,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 2310 transitions. [2024-11-14 05:19:02,094 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 2310 transitions. Word has length 21 [2024-11-14 05:19:02,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:19:02,095 INFO L471 AbstractCegarLoop]: Abstraction has 810 states and 2310 transitions. [2024-11-14 05:19:02,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:19:02,095 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 2310 transitions. [2024-11-14 05:19:02,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:19:02,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:19:02,097 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:19:02,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-11-14 05:19:02,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-11-14 05:19:02,297 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:19:02,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:19:02,298 INFO L85 PathProgramCache]: Analyzing trace with hash -669339634, now seen corresponding path program 54 times [2024-11-14 05:19:02,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:19:02,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416322183] [2024-11-14 05:19:02,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:19:02,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:19:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:19:02,481 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:02,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:19:02,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416322183] [2024-11-14 05:19:02,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416322183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:19:02,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197051361] [2024-11-14 05:19:02,481 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:19:02,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:19:02,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:19:02,483 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:19:02,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-14 05:19:02,529 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:19:02,529 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:19:02,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:19:02,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:19:02,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:02,836 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:19:03,316 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:03,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197051361] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:19:03,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [77586219] [2024-11-14 05:19:03,317 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:19:03,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:19:03,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-14 05:19:03,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742450361] [2024-11-14 05:19:03,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:19:03,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 05:19:03,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:19:03,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 05:19:03,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=942, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 05:19:03,318 INFO L87 Difference]: Start difference. First operand 810 states and 2310 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:19:04,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:19:04,780 INFO L93 Difference]: Finished difference Result 1088 states and 3001 transitions. [2024-11-14 05:19:04,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-14 05:19:04,780 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-14 05:19:04,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:19:04,783 INFO L225 Difference]: With dead ends: 1088 [2024-11-14 05:19:04,783 INFO L226 Difference]: Without dead ends: 1074 [2024-11-14 05:19:04,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=477, Invalid=2715, Unknown=0, NotChecked=0, Total=3192 [2024-11-14 05:19:04,783 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 95 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:19:04,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 18 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 05:19:04,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2024-11-14 05:19:04,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 820. [2024-11-14 05:19:04,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 819 states have (on average 2.843711843711844) internal successors, (2329), 819 states have internal predecessors, (2329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:19:04,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 2329 transitions. [2024-11-14 05:19:04,799 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 2329 transitions. Word has length 21 [2024-11-14 05:19:04,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:19:04,800 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 2329 transitions. [2024-11-14 05:19:04,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:19:04,800 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 2329 transitions. [2024-11-14 05:19:04,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:19:04,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:19:04,801 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:19:04,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-14 05:19:05,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-11-14 05:19:05,002 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:19:05,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:19:05,002 INFO L85 PathProgramCache]: Analyzing trace with hash 2105658860, now seen corresponding path program 55 times [2024-11-14 05:19:05,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:19:05,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498809489] [2024-11-14 05:19:05,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:19:05,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:19:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:19:05,247 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:05,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:19:05,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498809489] [2024-11-14 05:19:05,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498809489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:19:05,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066561669] [2024-11-14 05:19:05,248 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:19:05,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:19:05,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:19:05,249 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:19:05,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-14 05:19:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:19:05,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:19:05,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:19:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:05,634 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:19:06,124 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:06,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066561669] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:19:06,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1399210205] [2024-11-14 05:19:06,125 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:19:06,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:19:06,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 34 [2024-11-14 05:19:06,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037083907] [2024-11-14 05:19:06,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:19:06,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 05:19:06,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:19:06,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 05:19:06,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1010, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 05:19:06,126 INFO L87 Difference]: Start difference. First operand 820 states and 2329 transitions. Second operand has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:19:10,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:19:10,036 INFO L93 Difference]: Finished difference Result 1609 states and 4443 transitions. [2024-11-14 05:19:10,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-11-14 05:19:10,036 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:19:10,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:19:10,039 INFO L225 Difference]: With dead ends: 1609 [2024-11-14 05:19:10,039 INFO L226 Difference]: Without dead ends: 1595 [2024-11-14 05:19:10,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3660 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1459, Invalid=9671, Unknown=0, NotChecked=0, Total=11130 [2024-11-14 05:19:10,040 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 272 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 2780 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 2780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:19:10,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 30 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 2780 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-14 05:19:10,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2024-11-14 05:19:10,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1136. [2024-11-14 05:19:10,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 2.9048458149779735) internal successors, (3297), 1135 states have internal predecessors, (3297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:19:10,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 3297 transitions. [2024-11-14 05:19:10,064 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 3297 transitions. Word has length 23 [2024-11-14 05:19:10,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:19:10,064 INFO L471 AbstractCegarLoop]: Abstraction has 1136 states and 3297 transitions. [2024-11-14 05:19:10,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:19:10,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 3297 transitions. [2024-11-14 05:19:10,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:19:10,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:19:10,066 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:19:10,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-11-14 05:19:10,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-14 05:19:10,266 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:19:10,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:19:10,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1967130710, now seen corresponding path program 56 times [2024-11-14 05:19:10,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:19:10,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948584538] [2024-11-14 05:19:10,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:19:10,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:19:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:19:10,594 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:10,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:19:10,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948584538] [2024-11-14 05:19:10,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948584538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:19:10,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478479036] [2024-11-14 05:19:10,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:19:10,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:19:10,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:19:10,597 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:19:10,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-14 05:19:10,658 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 05:19:10,658 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:19:10,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:19:10,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:19:10,951 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:10,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:19:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:11,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478479036] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:19:11,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [795429351] [2024-11-14 05:19:11,426 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:19:11,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:19:11,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 34 [2024-11-14 05:19:11,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717097503] [2024-11-14 05:19:11,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:19:11,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 05:19:11,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:19:11,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 05:19:11,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1006, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 05:19:11,427 INFO L87 Difference]: Start difference. First operand 1136 states and 3297 transitions. Second operand has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:19:14,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:19:14,432 INFO L93 Difference]: Finished difference Result 2082 states and 5876 transitions. [2024-11-14 05:19:14,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-14 05:19:14,433 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:19:14,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:19:14,437 INFO L225 Difference]: With dead ends: 2082 [2024-11-14 05:19:14,437 INFO L226 Difference]: Without dead ends: 2069 [2024-11-14 05:19:14,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2911 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1376, Invalid=7744, Unknown=0, NotChecked=0, Total=9120 [2024-11-14 05:19:14,438 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 251 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 2021 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 2171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 2021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:19:14,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 37 Invalid, 2171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 2021 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 05:19:14,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2024-11-14 05:19:14,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1520. [2024-11-14 05:19:14,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1519 states have (on average 2.9526003949967086) internal successors, (4485), 1519 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:19:14,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 4485 transitions. [2024-11-14 05:19:14,481 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 4485 transitions. Word has length 23 [2024-11-14 05:19:14,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:19:14,481 INFO L471 AbstractCegarLoop]: Abstraction has 1520 states and 4485 transitions. [2024-11-14 05:19:14,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:19:14,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 4485 transitions. [2024-11-14 05:19:14,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:19:14,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:19:14,485 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:19:14,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-11-14 05:19:14,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-14 05:19:14,689 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:19:14,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:19:14,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1108850826, now seen corresponding path program 57 times [2024-11-14 05:19:14,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:19:14,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650305228] [2024-11-14 05:19:14,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:19:14,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:19:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:19:14,937 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:14,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:19:14,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650305228] [2024-11-14 05:19:14,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650305228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:19:14,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001909430] [2024-11-14 05:19:14,937 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:19:14,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:19:14,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:19:14,939 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:19:14,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-14 05:19:14,989 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:19:14,989 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:19:14,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:19:14,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:19:15,256 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:15,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:19:15,849 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:15,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001909430] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:19:15,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1968071059] [2024-11-14 05:19:15,849 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:19:15,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:19:15,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 34 [2024-11-14 05:19:15,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867027696] [2024-11-14 05:19:15,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:19:15,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 05:19:15,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:19:15,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 05:19:15,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1018, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 05:19:15,851 INFO L87 Difference]: Start difference. First operand 1520 states and 4485 transitions. Second operand has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:19:18,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:19:18,254 INFO L93 Difference]: Finished difference Result 1981 states and 5640 transitions. [2024-11-14 05:19:18,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-14 05:19:18,255 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:19:18,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:19:18,258 INFO L225 Difference]: With dead ends: 1981 [2024-11-14 05:19:18,259 INFO L226 Difference]: Without dead ends: 1962 [2024-11-14 05:19:18,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2038 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=937, Invalid=5705, Unknown=0, NotChecked=0, Total=6642 [2024-11-14 05:19:18,260 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 204 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1687 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 1794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:19:18,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 19 Invalid, 1794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1687 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 05:19:18,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2024-11-14 05:19:18,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1516. [2024-11-14 05:19:18,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1515 states have (on average 2.953795379537954) internal successors, (4475), 1515 states have internal predecessors, (4475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:19:18,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 4475 transitions. [2024-11-14 05:19:18,300 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 4475 transitions. Word has length 23 [2024-11-14 05:19:18,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:19:18,300 INFO L471 AbstractCegarLoop]: Abstraction has 1516 states and 4475 transitions. [2024-11-14 05:19:18,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:19:18,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 4475 transitions. [2024-11-14 05:19:18,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:19:18,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:19:18,304 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:19:18,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-11-14 05:19:18,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-14 05:19:18,504 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:19:18,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:19:18,505 INFO L85 PathProgramCache]: Analyzing trace with hash -509347036, now seen corresponding path program 58 times [2024-11-14 05:19:18,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:19:18,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122884526] [2024-11-14 05:19:18,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:19:18,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:19:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:19:18,733 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:18,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:19:18,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122884526] [2024-11-14 05:19:18,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122884526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:19:18,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368430773] [2024-11-14 05:19:18,734 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:19:18,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:19:18,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:19:18,736 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:19:18,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-14 05:19:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:19:18,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:19:18,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:19:19,053 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:19,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:19:19,502 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:19,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368430773] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:19:19,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [508970614] [2024-11-14 05:19:19,502 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:19:19,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:19:19,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 34 [2024-11-14 05:19:19,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840591143] [2024-11-14 05:19:19,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:19:19,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 05:19:19,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:19:19,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 05:19:19,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1004, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 05:19:19,504 INFO L87 Difference]: Start difference. First operand 1516 states and 4475 transitions. Second operand has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:19:23,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:19:23,472 INFO L93 Difference]: Finished difference Result 2661 states and 7648 transitions. [2024-11-14 05:19:23,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-11-14 05:19:23,473 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:19:23,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:19:23,477 INFO L225 Difference]: With dead ends: 2661 [2024-11-14 05:19:23,477 INFO L226 Difference]: Without dead ends: 2651 [2024-11-14 05:19:23,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5496 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2453, Invalid=12553, Unknown=0, NotChecked=0, Total=15006 [2024-11-14 05:19:23,478 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 310 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 2529 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 2664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 2529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:19:23,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 28 Invalid, 2664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 2529 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-14 05:19:23,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2024-11-14 05:19:23,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 1824. [2024-11-14 05:19:23,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1824 states, 1823 states have (on average 3.031815688425672) internal successors, (5527), 1823 states have internal predecessors, (5527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:19:23,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 5527 transitions. [2024-11-14 05:19:23,526 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 5527 transitions. Word has length 23 [2024-11-14 05:19:23,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:19:23,526 INFO L471 AbstractCegarLoop]: Abstraction has 1824 states and 5527 transitions. [2024-11-14 05:19:23,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:19:23,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 5527 transitions. [2024-11-14 05:19:23,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:19:23,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:19:23,529 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:19:23,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2024-11-14 05:19:23,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:19:23,729 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:19:23,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:19:23,730 INFO L85 PathProgramCache]: Analyzing trace with hash -647875186, now seen corresponding path program 59 times [2024-11-14 05:19:23,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:19:23,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132108904] [2024-11-14 05:19:23,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:19:23,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:19:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:19:24,024 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:24,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:19:24,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132108904] [2024-11-14 05:19:24,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132108904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:19:24,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939597681] [2024-11-14 05:19:24,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:19:24,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:19:24,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:19:24,027 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:19:24,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-11-14 05:19:24,094 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 05:19:24,094 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:19:24,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:19:24,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:19:24,447 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:24,447 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:19:25,026 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:25,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939597681] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:19:25,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1211338404] [2024-11-14 05:19:25,027 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:19:25,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:19:25,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 34 [2024-11-14 05:19:25,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881542909] [2024-11-14 05:19:25,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:19:25,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 05:19:25,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:19:25,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 05:19:25,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1007, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 05:19:25,028 INFO L87 Difference]: Start difference. First operand 1824 states and 5527 transitions. Second operand has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:19:28,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:19:28,507 INFO L93 Difference]: Finished difference Result 2412 states and 7008 transitions. [2024-11-14 05:19:28,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-14 05:19:28,507 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:19:28,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:19:28,512 INFO L225 Difference]: With dead ends: 2412 [2024-11-14 05:19:28,512 INFO L226 Difference]: Without dead ends: 2399 [2024-11-14 05:19:28,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4610 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2018, Invalid=11092, Unknown=0, NotChecked=0, Total=13110 [2024-11-14 05:19:28,513 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 277 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 2231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:19:28,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 30 Invalid, 2231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2110 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 05:19:28,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2024-11-14 05:19:28,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 1914. [2024-11-14 05:19:28,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1913 states have (on average 3.0726607422895973) internal successors, (5878), 1913 states have internal predecessors, (5878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:19:28,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 5878 transitions. [2024-11-14 05:19:28,558 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 5878 transitions. Word has length 23 [2024-11-14 05:19:28,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:19:28,558 INFO L471 AbstractCegarLoop]: Abstraction has 1914 states and 5878 transitions. [2024-11-14 05:19:28,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:19:28,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 5878 transitions. [2024-11-14 05:19:28,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:19:28,561 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:19:28,561 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:19:28,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-11-14 05:19:28,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:19:28,761 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:19:28,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:19:28,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1506155070, now seen corresponding path program 60 times [2024-11-14 05:19:28,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:19:28,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675119591] [2024-11-14 05:19:28,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:19:28,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:19:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:19:28,976 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:28,976 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:19:28,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675119591] [2024-11-14 05:19:28,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675119591] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:19:28,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075215155] [2024-11-14 05:19:28,977 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:19:28,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:19:28,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:19:28,978 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:19:28,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-14 05:19:29,023 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:19:29,024 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:19:29,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:19:29,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:19:29,284 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:29,284 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:19:29,922 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:29,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075215155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:19:29,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1028350501] [2024-11-14 05:19:29,923 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:19:29,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:19:29,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 34 [2024-11-14 05:19:29,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045766140] [2024-11-14 05:19:29,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:19:29,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 05:19:29,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:19:29,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 05:19:29,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1018, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 05:19:29,924 INFO L87 Difference]: Start difference. First operand 1914 states and 5878 transitions. Second operand has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:19:32,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:19:32,643 INFO L93 Difference]: Finished difference Result 2298 states and 6746 transitions. [2024-11-14 05:19:32,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-14 05:19:32,644 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:19:32,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:19:32,648 INFO L225 Difference]: With dead ends: 2298 [2024-11-14 05:19:32,648 INFO L226 Difference]: Without dead ends: 2279 [2024-11-14 05:19:32,649 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2660 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1183, Invalid=7189, Unknown=0, NotChecked=0, Total=8372 [2024-11-14 05:19:32,650 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 205 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1974 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 2066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:19:32,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 21 Invalid, 2066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1974 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 05:19:32,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2024-11-14 05:19:32,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 1902. [2024-11-14 05:19:32,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1902 states, 1901 states have (on average 3.0636507101525514) internal successors, (5824), 1901 states have internal predecessors, (5824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:19:32,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 5824 transitions. [2024-11-14 05:19:32,712 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 5824 transitions. Word has length 23 [2024-11-14 05:19:32,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:19:32,712 INFO L471 AbstractCegarLoop]: Abstraction has 1902 states and 5824 transitions. [2024-11-14 05:19:32,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:19:32,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 5824 transitions. [2024-11-14 05:19:32,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:19:32,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:19:32,715 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:19:32,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-11-14 05:19:32,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:19:32,916 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:19:32,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:19:32,916 INFO L85 PathProgramCache]: Analyzing trace with hash -632414390, now seen corresponding path program 61 times [2024-11-14 05:19:32,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:19:32,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335125430] [2024-11-14 05:19:32,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:19:32,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:19:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:19:33,141 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:33,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:19:33,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335125430] [2024-11-14 05:19:33,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335125430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:19:33,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116492651] [2024-11-14 05:19:33,141 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:19:33,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:19:33,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:19:33,143 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:19:33,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-11-14 05:19:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:19:33,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:19:33,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:19:33,448 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:33,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:19:33,849 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:19:33,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116492651] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:19:33,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [797406883] [2024-11-14 05:19:33,850 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition WARNING: YOUR LOGFILE WAS TOO LONG, SOME LINES IN THE MIDDLE WERE REMOVED. [2024-11-14 05:22:30,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288669045] [2024-11-14 05:22:30,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:22:30,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:22:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:22:31,052 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:22:31,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:22:31,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288669045] [2024-11-14 05:22:31,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288669045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:22:31,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758738742] [2024-11-14 05:22:31,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:22:31,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:22:31,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:22:31,054 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:22:31,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2024-11-14 05:22:31,111 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:22:31,111 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:22:31,112 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:22:31,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:22:31,393 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:22:31,393 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:22:31,796 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:22:31,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758738742] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:22:31,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2016664096] [2024-11-14 05:22:31,797 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:22:31,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:22:31,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 36 [2024-11-14 05:22:31,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621379836] [2024-11-14 05:22:31,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:22:31,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-14 05:22:31,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:22:31,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-14 05:22:31,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1100, Unknown=0, NotChecked=0, Total=1332 [2024-11-14 05:22:31,798 INFO L87 Difference]: Start difference. First operand 8268 states and 24775 transitions. Second operand has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:22:37,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:22:37,065 INFO L93 Difference]: Finished difference Result 11162 states and 32590 transitions. [2024-11-14 05:22:37,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2024-11-14 05:22:37,066 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:22:37,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:22:37,092 INFO L225 Difference]: With dead ends: 11162 [2024-11-14 05:22:37,092 INFO L226 Difference]: Without dead ends: 11149 [2024-11-14 05:22:37,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7107 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2998, Invalid=15634, Unknown=0, NotChecked=0, Total=18632 [2024-11-14 05:22:37,096 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 592 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2236 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 2416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:22:37,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 82 Invalid, 2416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2236 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 05:22:37,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11149 states. [2024-11-14 05:22:37,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11149 to 8280. [2024-11-14 05:22:37,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8280 states, 8279 states have (on average 2.9983089745138303) internal successors, (24823), 8279 states have internal predecessors, (24823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:22:37,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8280 states to 8280 states and 24823 transitions. [2024-11-14 05:22:37,271 INFO L78 Accepts]: Start accepts. Automaton has 8280 states and 24823 transitions. Word has length 23 [2024-11-14 05:22:37,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:22:37,271 INFO L471 AbstractCegarLoop]: Abstraction has 8280 states and 24823 transitions. [2024-11-14 05:22:37,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:22:37,271 INFO L276 IsEmpty]: Start isEmpty. Operand 8280 states and 24823 transitions. [2024-11-14 05:22:37,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:22:37,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:22:37,281 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:22:37,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2024-11-14 05:22:37,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:22:37,481 INFO L396 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:22:37,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:22:37,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1075377586, now seen corresponding path program 93 times [2024-11-14 05:22:37,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:22:37,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781968902] [2024-11-14 05:22:37,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:22:37,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:22:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:22:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:22:37,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:22:37,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781968902] [2024-11-14 05:22:37,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781968902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:22:37,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271804534] [2024-11-14 05:22:37,716 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:22:37,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:22:37,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:22:37,718 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:22:37,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2024-11-14 05:22:37,771 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:22:37,771 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:22:37,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:22:37,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:22:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:22:38,068 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:22:38,570 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:22:38,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271804534] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:22:38,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1660910461] [2024-11-14 05:22:38,570 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:22:38,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:22:38,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 36 [2024-11-14 05:22:38,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500956626] [2024-11-14 05:22:38,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:22:38,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-14 05:22:38,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:22:38,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-14 05:22:38,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1113, Unknown=0, NotChecked=0, Total=1332 [2024-11-14 05:22:38,572 INFO L87 Difference]: Start difference. First operand 8280 states and 24823 transitions. Second operand has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:22:43,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:22:43,235 INFO L93 Difference]: Finished difference Result 11020 states and 32260 transitions. [2024-11-14 05:22:43,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-14 05:22:43,235 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:22:43,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:22:43,263 INFO L225 Difference]: With dead ends: 11020 [2024-11-14 05:22:43,263 INFO L226 Difference]: Without dead ends: 11000 [2024-11-14 05:22:43,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4800 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1941, Invalid=11865, Unknown=0, NotChecked=0, Total=13806 [2024-11-14 05:22:43,267 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 380 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 3000 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 3107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:22:43,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 128 Invalid, 3107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 3000 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-14 05:22:43,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11000 states. [2024-11-14 05:22:43,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11000 to 8264. [2024-11-14 05:22:43,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8264 states, 8263 states have (on average 2.9963693573762558) internal successors, (24759), 8263 states have internal predecessors, (24759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:22:43,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8264 states to 8264 states and 24759 transitions. [2024-11-14 05:22:43,441 INFO L78 Accepts]: Start accepts. Automaton has 8264 states and 24759 transitions. Word has length 23 [2024-11-14 05:22:43,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:22:43,441 INFO L471 AbstractCegarLoop]: Abstraction has 8264 states and 24759 transitions. [2024-11-14 05:22:43,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:22:43,441 INFO L276 IsEmpty]: Start isEmpty. Operand 8264 states and 24759 transitions. [2024-11-14 05:22:43,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:22:43,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:22:43,451 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:22:43,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2024-11-14 05:22:43,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:22:43,651 INFO L396 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:22:43,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:22:43,652 INFO L85 PathProgramCache]: Analyzing trace with hash -201636906, now seen corresponding path program 94 times [2024-11-14 05:22:43,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:22:43,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786325120] [2024-11-14 05:22:43,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:22:43,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:22:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:22:43,896 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:22:43,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:22:43,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786325120] [2024-11-14 05:22:43,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786325120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:22:43,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130376921] [2024-11-14 05:22:43,896 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:22:43,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:22:43,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:22:43,898 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:22:43,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2024-11-14 05:22:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:22:44,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:22:44,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:22:44,385 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:22:44,385 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:22:44,819 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:22:44,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130376921] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:22:44,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1887735198] [2024-11-14 05:22:44,820 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:22:44,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:22:44,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 36 [2024-11-14 05:22:44,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100671151] [2024-11-14 05:22:44,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:22:44,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-14 05:22:44,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:22:44,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-14 05:22:44,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1112, Unknown=0, NotChecked=0, Total=1332 [2024-11-14 05:22:44,822 INFO L87 Difference]: Start difference. First operand 8264 states and 24759 transitions. Second operand has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:22:48,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:22:48,958 INFO L93 Difference]: Finished difference Result 11028 states and 32258 transitions. [2024-11-14 05:22:48,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-14 05:22:48,959 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:22:48,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:22:48,994 INFO L225 Difference]: With dead ends: 11028 [2024-11-14 05:22:48,994 INFO L226 Difference]: Without dead ends: 10921 [2024-11-14 05:22:48,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4450 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1748, Invalid=11134, Unknown=0, NotChecked=0, Total=12882 [2024-11-14 05:22:48,998 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 396 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 2650 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 2739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:22:48,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 119 Invalid, 2739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2650 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 05:22:49,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10921 states. [2024-11-14 05:22:49,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10921 to 8254. [2024-11-14 05:22:49,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8254 states, 8253 states have (on average 2.993214588634436) internal successors, (24703), 8253 states have internal predecessors, (24703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:22:49,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8254 states to 8254 states and 24703 transitions. [2024-11-14 05:22:49,222 INFO L78 Accepts]: Start accepts. Automaton has 8254 states and 24703 transitions. Word has length 23 [2024-11-14 05:22:49,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:22:49,222 INFO L471 AbstractCegarLoop]: Abstraction has 8254 states and 24703 transitions. [2024-11-14 05:22:49,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:22:49,222 INFO L276 IsEmpty]: Start isEmpty. Operand 8254 states and 24703 transitions. [2024-11-14 05:22:49,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:22:49,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:22:49,232 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:22:49,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2024-11-14 05:22:49,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2024-11-14 05:22:49,433 INFO L396 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:22:49,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:22:49,433 INFO L85 PathProgramCache]: Analyzing trace with hash -2017334868, now seen corresponding path program 95 times [2024-11-14 05:22:49,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:22:49,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658038044] [2024-11-14 05:22:49,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:22:49,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:22:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:22:49,770 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:22:49,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:22:49,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658038044] [2024-11-14 05:22:49,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658038044] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:22:49,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895209863] [2024-11-14 05:22:49,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:22:49,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:22:49,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:22:49,773 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:22:49,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2024-11-14 05:22:49,828 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:22:49,828 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:22:49,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:22:49,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:22:50,157 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:22:50,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:22:50,613 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:22:50,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895209863] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:22:50,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [711923325] [2024-11-14 05:22:50,613 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:22:50,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:22:50,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 36 [2024-11-14 05:22:50,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998605003] [2024-11-14 05:22:50,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:22:50,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-14 05:22:50,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:22:50,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-14 05:22:50,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1113, Unknown=0, NotChecked=0, Total=1332 [2024-11-14 05:22:50,615 INFO L87 Difference]: Start difference. First operand 8254 states and 24703 transitions. Second operand has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:22:53,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:22:53,524 INFO L93 Difference]: Finished difference Result 11812 states and 34541 transitions. [2024-11-14 05:22:53,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-14 05:22:53,524 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:22:53,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:22:53,554 INFO L225 Difference]: With dead ends: 11812 [2024-11-14 05:22:53,554 INFO L226 Difference]: Without dead ends: 11728 [2024-11-14 05:22:53,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2531 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1085, Invalid=6747, Unknown=0, NotChecked=0, Total=7832 [2024-11-14 05:22:53,558 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 413 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 2011 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 2071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:22:53,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 112 Invalid, 2071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2011 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 05:22:53,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11728 states. [2024-11-14 05:22:53,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11728 to 8289. [2024-11-14 05:22:53,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8289 states, 8288 states have (on average 2.994208494208494) internal successors, (24816), 8288 states have internal predecessors, (24816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:22:53,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8289 states to 8289 states and 24816 transitions. [2024-11-14 05:22:53,750 INFO L78 Accepts]: Start accepts. Automaton has 8289 states and 24816 transitions. Word has length 23 [2024-11-14 05:22:53,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:22:53,750 INFO L471 AbstractCegarLoop]: Abstraction has 8289 states and 24816 transitions. [2024-11-14 05:22:53,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:22:53,751 INFO L276 IsEmpty]: Start isEmpty. Operand 8289 states and 24816 transitions. [2024-11-14 05:22:53,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:22:53,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:22:53,761 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:22:53,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2024-11-14 05:22:53,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2024-11-14 05:22:53,961 INFO L396 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:22:53,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:22:53,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1411049670, now seen corresponding path program 96 times [2024-11-14 05:22:53,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:22:53,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877131814] [2024-11-14 05:22:53,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:22:53,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:22:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:22:54,290 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:22:54,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:22:54,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877131814] [2024-11-14 05:22:54,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877131814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:22:54,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233264508] [2024-11-14 05:22:54,290 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:22:54,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:22:54,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:22:54,292 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:22:54,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2024-11-14 05:22:54,385 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:22:54,385 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:22:54,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:22:54,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:22:54,725 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:22:54,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:22:55,211 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:22:55,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233264508] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:22:55,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [303251322] [2024-11-14 05:22:55,212 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:22:55,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:22:55,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 36 [2024-11-14 05:22:55,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387590497] [2024-11-14 05:22:55,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:22:55,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-14 05:22:55,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:22:55,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-14 05:22:55,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1080, Unknown=0, NotChecked=0, Total=1332 [2024-11-14 05:22:55,214 INFO L87 Difference]: Start difference. First operand 8289 states and 24816 transitions. Second operand has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:22:59,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:22:59,967 INFO L93 Difference]: Finished difference Result 10447 states and 30654 transitions. [2024-11-14 05:22:59,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-11-14 05:22:59,968 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:22:59,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:23:00,001 INFO L225 Difference]: With dead ends: 10447 [2024-11-14 05:23:00,001 INFO L226 Difference]: Without dead ends: 10437 [2024-11-14 05:23:00,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3954 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1924, Invalid=9848, Unknown=0, NotChecked=0, Total=11772 [2024-11-14 05:23:00,004 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 317 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2542 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:23:00,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 88 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2542 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 05:23:00,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10437 states. [2024-11-14 05:23:00,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10437 to 8301. [2024-11-14 05:23:00,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8301 states, 8300 states have (on average 2.9934939759036143) internal successors, (24846), 8300 states have internal predecessors, (24846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:00,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8301 states to 8301 states and 24846 transitions. [2024-11-14 05:23:00,238 INFO L78 Accepts]: Start accepts. Automaton has 8301 states and 24846 transitions. Word has length 23 [2024-11-14 05:23:00,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:23:00,238 INFO L471 AbstractCegarLoop]: Abstraction has 8301 states and 24846 transitions. [2024-11-14 05:23:00,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:00,238 INFO L276 IsEmpty]: Start isEmpty. Operand 8301 states and 24846 transitions. [2024-11-14 05:23:00,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:23:00,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:23:00,249 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:23:00,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2024-11-14 05:23:00,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:23:00,450 INFO L396 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:23:00,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:23:00,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1272521520, now seen corresponding path program 97 times [2024-11-14 05:23:00,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:23:00,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678658233] [2024-11-14 05:23:00,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:23:00,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:23:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:23:00,772 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:00,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:23:00,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678658233] [2024-11-14 05:23:00,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678658233] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:23:00,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809990692] [2024-11-14 05:23:00,773 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:23:00,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:23:00,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:23:00,774 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:23:00,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2024-11-14 05:23:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:23:00,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:23:00,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:23:01,176 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:01,176 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:23:01,703 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:01,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809990692] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:23:01,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [403964160] [2024-11-14 05:23:01,704 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:23:01,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:23:01,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 36 [2024-11-14 05:23:01,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173062887] [2024-11-14 05:23:01,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:23:01,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-14 05:23:01,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:23:01,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-14 05:23:01,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1083, Unknown=0, NotChecked=0, Total=1332 [2024-11-14 05:23:01,705 INFO L87 Difference]: Start difference. First operand 8301 states and 24846 transitions. Second operand has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:04,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:23:04,753 INFO L93 Difference]: Finished difference Result 9911 states and 29286 transitions. [2024-11-14 05:23:04,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-14 05:23:04,753 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:23:04,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:23:04,775 INFO L225 Difference]: With dead ends: 9911 [2024-11-14 05:23:04,775 INFO L226 Difference]: Without dead ends: 9898 [2024-11-14 05:23:04,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1271, Invalid=6039, Unknown=0, NotChecked=0, Total=7310 [2024-11-14 05:23:04,777 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 294 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1903 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 1970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:23:04,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 88 Invalid, 1970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1903 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 05:23:04,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9898 states. [2024-11-14 05:23:04,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9898 to 8301. [2024-11-14 05:23:04,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8301 states, 8300 states have (on average 2.9934939759036143) internal successors, (24846), 8300 states have internal predecessors, (24846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:04,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8301 states to 8301 states and 24846 transitions. [2024-11-14 05:23:04,946 INFO L78 Accepts]: Start accepts. Automaton has 8301 states and 24846 transitions. Word has length 23 [2024-11-14 05:23:04,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:23:04,946 INFO L471 AbstractCegarLoop]: Abstraction has 8301 states and 24846 transitions. [2024-11-14 05:23:04,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:04,946 INFO L276 IsEmpty]: Start isEmpty. Operand 8301 states and 24846 transitions. [2024-11-14 05:23:04,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:23:04,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:23:04,956 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:23:04,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2024-11-14 05:23:05,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2024-11-14 05:23:05,157 INFO L396 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:23:05,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:23:05,157 INFO L85 PathProgramCache]: Analyzing trace with hash 863964924, now seen corresponding path program 98 times [2024-11-14 05:23:05,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:23:05,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665144370] [2024-11-14 05:23:05,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:23:05,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:23:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:23:05,443 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:05,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:23:05,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665144370] [2024-11-14 05:23:05,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665144370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:23:05,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686705010] [2024-11-14 05:23:05,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:23:05,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:23:05,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:23:05,445 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:23:05,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2024-11-14 05:23:05,502 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:23:05,502 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:23:05,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:23:05,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:23:05,837 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:05,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:23:06,367 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:06,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686705010] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:23:06,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [820406589] [2024-11-14 05:23:06,368 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:23:06,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:23:06,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 36 [2024-11-14 05:23:06,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943916672] [2024-11-14 05:23:06,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:23:06,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-14 05:23:06,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:23:06,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-14 05:23:06,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1091, Unknown=0, NotChecked=0, Total=1332 [2024-11-14 05:23:06,370 INFO L87 Difference]: Start difference. First operand 8301 states and 24846 transitions. Second operand has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:11,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:23:11,804 INFO L93 Difference]: Finished difference Result 10290 states and 30255 transitions. [2024-11-14 05:23:11,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2024-11-14 05:23:11,805 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:23:11,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:23:11,832 INFO L225 Difference]: With dead ends: 10290 [2024-11-14 05:23:11,832 INFO L226 Difference]: Without dead ends: 10277 [2024-11-14 05:23:11,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5370 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2489, Invalid=12517, Unknown=0, NotChecked=0, Total=15006 [2024-11-14 05:23:11,837 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 384 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 2687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:23:11,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 75 Invalid, 2687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 05:23:11,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10277 states. [2024-11-14 05:23:12,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10277 to 8397. [2024-11-14 05:23:12,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8397 states, 8396 states have (on average 2.9992853739876133) internal successors, (25182), 8396 states have internal predecessors, (25182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:12,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8397 states to 8397 states and 25182 transitions. [2024-11-14 05:23:12,047 INFO L78 Accepts]: Start accepts. Automaton has 8397 states and 25182 transitions. Word has length 23 [2024-11-14 05:23:12,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:23:12,047 INFO L471 AbstractCegarLoop]: Abstraction has 8397 states and 25182 transitions. [2024-11-14 05:23:12,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:12,047 INFO L276 IsEmpty]: Start isEmpty. Operand 8397 states and 25182 transitions. [2024-11-14 05:23:12,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:23:12,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:23:12,062 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:23:12,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2024-11-14 05:23:12,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:23:12,262 INFO L396 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:23:12,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:23:12,263 INFO L85 PathProgramCache]: Analyzing trace with hash 5685040, now seen corresponding path program 99 times [2024-11-14 05:23:12,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:23:12,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013453493] [2024-11-14 05:23:12,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:23:12,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:23:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:23:12,576 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:12,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:23:12,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013453493] [2024-11-14 05:23:12,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013453493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:23:12,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877201485] [2024-11-14 05:23:12,576 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:23:12,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:23:12,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:23:12,578 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:23:12,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2024-11-14 05:23:12,638 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:23:12,638 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:23:12,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:23:12,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:23:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:13,000 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:23:13,518 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:13,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877201485] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:23:13,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1126099429] [2024-11-14 05:23:13,518 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:23:13,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:23:13,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 36 [2024-11-14 05:23:13,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601415213] [2024-11-14 05:23:13,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:23:13,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-14 05:23:13,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:23:13,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-14 05:23:13,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1107, Unknown=0, NotChecked=0, Total=1332 [2024-11-14 05:23:13,520 INFO L87 Difference]: Start difference. First operand 8397 states and 25182 transitions. Second operand has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:17,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:23:17,488 INFO L93 Difference]: Finished difference Result 10096 states and 29786 transitions. [2024-11-14 05:23:17,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-14 05:23:17,489 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:23:17,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:23:17,516 INFO L225 Difference]: With dead ends: 10096 [2024-11-14 05:23:17,516 INFO L226 Difference]: Without dead ends: 10080 [2024-11-14 05:23:17,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3533 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1618, Invalid=9094, Unknown=0, NotChecked=0, Total=10712 [2024-11-14 05:23:17,520 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 343 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1953 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:23:17,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 61 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1953 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 05:23:17,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10080 states. [2024-11-14 05:23:17,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10080 to 8385. [2024-11-14 05:23:17,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8385 states, 8384 states have (on average 2.9968988549618323) internal successors, (25126), 8384 states have internal predecessors, (25126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:17,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8385 states to 8385 states and 25126 transitions. [2024-11-14 05:23:17,685 INFO L78 Accepts]: Start accepts. Automaton has 8385 states and 25126 transitions. Word has length 23 [2024-11-14 05:23:17,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:23:17,685 INFO L471 AbstractCegarLoop]: Abstraction has 8385 states and 25126 transitions. [2024-11-14 05:23:17,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:17,685 INFO L276 IsEmpty]: Start isEmpty. Operand 8385 states and 25126 transitions. [2024-11-14 05:23:17,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:23:17,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:23:17,696 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:23:17,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2024-11-14 05:23:17,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2024-11-14 05:23:17,897 INFO L396 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:23:17,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:23:17,897 INFO L85 PathProgramCache]: Analyzing trace with hash 879425720, now seen corresponding path program 100 times [2024-11-14 05:23:17,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:23:17,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965213526] [2024-11-14 05:23:17,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:23:17,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:23:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:23:18,187 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:18,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:23:18,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965213526] [2024-11-14 05:23:18,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965213526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:23:18,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148075134] [2024-11-14 05:23:18,187 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:23:18,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:23:18,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:23:18,189 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:23:18,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2024-11-14 05:23:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:23:18,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:23:18,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:23:18,643 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:18,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:23:19,115 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:19,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148075134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:23:19,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [838434483] [2024-11-14 05:23:19,116 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:23:19,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:23:19,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 36 [2024-11-14 05:23:19,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144357325] [2024-11-14 05:23:19,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:23:19,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-14 05:23:19,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:23:19,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-14 05:23:19,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1106, Unknown=0, NotChecked=0, Total=1332 [2024-11-14 05:23:19,118 INFO L87 Difference]: Start difference. First operand 8385 states and 25126 transitions. Second operand has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:22,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:23:22,497 INFO L93 Difference]: Finished difference Result 9694 states and 28451 transitions. [2024-11-14 05:23:22,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-14 05:23:22,498 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:23:22,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:23:22,520 INFO L225 Difference]: With dead ends: 9694 [2024-11-14 05:23:22,521 INFO L226 Difference]: Without dead ends: 9612 [2024-11-14 05:23:22,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2941 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1323, Invalid=7797, Unknown=0, NotChecked=0, Total=9120 [2024-11-14 05:23:22,523 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 299 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 2175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:23:22,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 71 Invalid, 2175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2110 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-14 05:23:22,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9612 states. [2024-11-14 05:23:22,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9612 to 8389. [2024-11-14 05:23:22,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8389 states, 8388 states have (on average 2.992131616595136) internal successors, (25098), 8388 states have internal predecessors, (25098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:22,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8389 states to 8389 states and 25098 transitions. [2024-11-14 05:23:22,676 INFO L78 Accepts]: Start accepts. Automaton has 8389 states and 25098 transitions. Word has length 23 [2024-11-14 05:23:22,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:23:22,677 INFO L471 AbstractCegarLoop]: Abstraction has 8389 states and 25098 transitions. [2024-11-14 05:23:22,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:22,677 INFO L276 IsEmpty]: Start isEmpty. Operand 8389 states and 25098 transitions. [2024-11-14 05:23:22,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:23:22,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:23:22,687 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:23:22,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2024-11-14 05:23:22,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2024-11-14 05:23:22,888 INFO L396 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:23:22,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:23:22,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1439818898, now seen corresponding path program 101 times [2024-11-14 05:23:22,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:23:22,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219639793] [2024-11-14 05:23:22,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:23:22,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:23:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:23:23,220 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:23,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:23:23,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219639793] [2024-11-14 05:23:23,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219639793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:23:23,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26275073] [2024-11-14 05:23:23,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:23:23,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:23:23,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:23:23,222 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:23:23,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2024-11-14 05:23:23,281 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 05:23:23,281 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:23:23,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:23:23,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:23:23,613 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:23,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:23:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:24,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26275073] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:23:24,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [483371886] [2024-11-14 05:23:24,110 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:23:24,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:23:24,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 36 [2024-11-14 05:23:24,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988161645] [2024-11-14 05:23:24,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:23:24,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-14 05:23:24,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:23:24,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-14 05:23:24,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1083, Unknown=0, NotChecked=0, Total=1332 [2024-11-14 05:23:24,112 INFO L87 Difference]: Start difference. First operand 8389 states and 25098 transitions. Second operand has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:27,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:23:27,469 INFO L93 Difference]: Finished difference Result 10121 states and 29915 transitions. [2024-11-14 05:23:27,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-14 05:23:27,469 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:23:27,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:23:27,495 INFO L225 Difference]: With dead ends: 10121 [2024-11-14 05:23:27,495 INFO L226 Difference]: Without dead ends: 10107 [2024-11-14 05:23:27,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2812 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1535, Invalid=7021, Unknown=0, NotChecked=0, Total=8556 [2024-11-14 05:23:27,499 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 271 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 2046 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:23:27,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 60 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2046 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 05:23:27,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10107 states. [2024-11-14 05:23:27,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10107 to 8391. [2024-11-14 05:23:27,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8391 states, 8390 states have (on average 2.992014302741359) internal successors, (25103), 8390 states have internal predecessors, (25103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:27,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8391 states to 8391 states and 25103 transitions. [2024-11-14 05:23:27,657 INFO L78 Accepts]: Start accepts. Automaton has 8391 states and 25103 transitions. Word has length 23 [2024-11-14 05:23:27,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:23:27,657 INFO L471 AbstractCegarLoop]: Abstraction has 8391 states and 25103 transitions. [2024-11-14 05:23:27,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:27,657 INFO L276 IsEmpty]: Start isEmpty. Operand 8391 states and 25103 transitions. [2024-11-14 05:23:27,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:23:27,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:23:27,666 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:23:27,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2024-11-14 05:23:27,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2024-11-14 05:23:27,867 INFO L396 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:23:27,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:23:27,867 INFO L85 PathProgramCache]: Analyzing trace with hash 427550068, now seen corresponding path program 102 times [2024-11-14 05:23:27,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:23:27,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295365368] [2024-11-14 05:23:27,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:23:27,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:23:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:23:28,099 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:28,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:23:28,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295365368] [2024-11-14 05:23:28,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295365368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:23:28,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910196733] [2024-11-14 05:23:28,099 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:23:28,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:23:28,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:23:28,101 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:23:28,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2024-11-14 05:23:28,177 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:23:28,177 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:23:28,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:23:28,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:23:28,456 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:28,456 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:23:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:28,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910196733] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:23:28,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [236498864] [2024-11-14 05:23:28,895 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:23:28,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:23:28,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 36 [2024-11-14 05:23:28,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251977396] [2024-11-14 05:23:28,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:23:28,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-14 05:23:28,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:23:28,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-14 05:23:28,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1084, Unknown=0, NotChecked=0, Total=1332 [2024-11-14 05:23:28,896 INFO L87 Difference]: Start difference. First operand 8391 states and 25103 transitions. Second operand has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:31,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:23:31,448 INFO L93 Difference]: Finished difference Result 9691 states and 28711 transitions. [2024-11-14 05:23:31,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-14 05:23:31,448 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:23:31,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:23:31,471 INFO L225 Difference]: With dead ends: 9691 [2024-11-14 05:23:31,471 INFO L226 Difference]: Without dead ends: 9678 [2024-11-14 05:23:31,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1960 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1186, Invalid=5294, Unknown=0, NotChecked=0, Total=6480 [2024-11-14 05:23:31,475 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 213 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 2030 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 2083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:23:31,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 63 Invalid, 2083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2030 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 05:23:31,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9678 states. [2024-11-14 05:23:31,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9678 to 8391. [2024-11-14 05:23:31,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8391 states, 8390 states have (on average 2.9915375446960666) internal successors, (25099), 8390 states have internal predecessors, (25099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:31,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8391 states to 8391 states and 25099 transitions. [2024-11-14 05:23:31,692 INFO L78 Accepts]: Start accepts. Automaton has 8391 states and 25099 transitions. Word has length 23 [2024-11-14 05:23:31,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:23:31,692 INFO L471 AbstractCegarLoop]: Abstraction has 8391 states and 25099 transitions. [2024-11-14 05:23:31,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:31,693 INFO L276 IsEmpty]: Start isEmpty. Operand 8391 states and 25099 transitions. [2024-11-14 05:23:31,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:23:31,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:23:31,701 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:23:31,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2024-11-14 05:23:31,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2024-11-14 05:23:31,901 INFO L396 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:23:31,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:23:31,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1882766012, now seen corresponding path program 103 times [2024-11-14 05:23:31,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:23:31,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207883382] [2024-11-14 05:23:31,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:23:31,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:23:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:23:32,179 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:32,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:23:32,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207883382] [2024-11-14 05:23:32,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207883382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:23:32,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17167876] [2024-11-14 05:23:32,179 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:23:32,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:23:32,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:23:32,181 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:23:32,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2024-11-14 05:23:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:23:32,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:23:32,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:23:32,531 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:32,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:23:32,993 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:32,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17167876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:23:32,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1677671101] [2024-11-14 05:23:32,993 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:23:32,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:23:32,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 35 [2024-11-14 05:23:32,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90295747] [2024-11-14 05:23:32,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:23:32,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-14 05:23:32,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:23:32,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-14 05:23:32,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1057, Unknown=0, NotChecked=0, Total=1260 [2024-11-14 05:23:32,995 INFO L87 Difference]: Start difference. First operand 8391 states and 25099 transitions. Second operand has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:36,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:23:36,719 INFO L93 Difference]: Finished difference Result 9936 states and 29334 transitions. [2024-11-14 05:23:36,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-11-14 05:23:36,720 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:23:36,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:23:36,745 INFO L225 Difference]: With dead ends: 9936 [2024-11-14 05:23:36,745 INFO L226 Difference]: Without dead ends: 9920 [2024-11-14 05:23:36,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4186 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1726, Invalid=10264, Unknown=0, NotChecked=0, Total=11990 [2024-11-14 05:23:36,749 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 357 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 2442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:23:36,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 70 Invalid, 2442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 05:23:36,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9920 states. [2024-11-14 05:23:36,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9920 to 8397. [2024-11-14 05:23:36,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8397 states, 8396 states have (on average 2.991424487851358) internal successors, (25116), 8396 states have internal predecessors, (25116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:36,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8397 states to 8397 states and 25116 transitions. [2024-11-14 05:23:36,905 INFO L78 Accepts]: Start accepts. Automaton has 8397 states and 25116 transitions. Word has length 23 [2024-11-14 05:23:36,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:23:36,905 INFO L471 AbstractCegarLoop]: Abstraction has 8397 states and 25116 transitions. [2024-11-14 05:23:36,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:36,905 INFO L276 IsEmpty]: Start isEmpty. Operand 8397 states and 25116 transitions. [2024-11-14 05:23:36,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:23:36,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:23:36,915 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:23:36,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2024-11-14 05:23:37,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,104 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:23:37,116 INFO L396 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:23:37,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:23:37,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1024486128, now seen corresponding path program 104 times [2024-11-14 05:23:37,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:23:37,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422579473] [2024-11-14 05:23:37,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:23:37,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:23:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:23:37,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:37,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:23:37,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422579473] [2024-11-14 05:23:37,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422579473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:23:37,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226295845] [2024-11-14 05:23:37,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:23:37,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:23:37,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:23:37,358 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:23:37,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2024-11-14 05:23:37,410 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:23:37,410 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:23:37,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 05:23:37,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:23:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:37,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:23:38,607 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:38,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226295845] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:23:38,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [856949001] [2024-11-14 05:23:38,607 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:23:38,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:23:38,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 36 [2024-11-14 05:23:38,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006555953] [2024-11-14 05:23:38,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:23:38,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-14 05:23:38,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:23:38,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-14 05:23:38,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1160, Unknown=0, NotChecked=0, Total=1332 [2024-11-14 05:23:38,609 INFO L87 Difference]: Start difference. First operand 8397 states and 25116 transitions. Second operand has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:41,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:23:41,691 INFO L93 Difference]: Finished difference Result 9589 states and 28390 transitions. [2024-11-14 05:23:41,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-14 05:23:41,691 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:23:41,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:23:41,714 INFO L225 Difference]: With dead ends: 9589 [2024-11-14 05:23:41,714 INFO L226 Difference]: Without dead ends: 9574 [2024-11-14 05:23:41,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1752 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=887, Invalid=5755, Unknown=0, NotChecked=0, Total=6642 [2024-11-14 05:23:41,717 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 213 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2581 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 2640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:23:41,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 70 Invalid, 2640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2581 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 05:23:41,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9574 states. [2024-11-14 05:23:41,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9574 to 8397. [2024-11-14 05:23:41,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8397 states, 8396 states have (on average 2.9904716531681754) internal successors, (25108), 8396 states have internal predecessors, (25108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:41,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8397 states to 8397 states and 25108 transitions. [2024-11-14 05:23:41,855 INFO L78 Accepts]: Start accepts. Automaton has 8397 states and 25108 transitions. Word has length 23 [2024-11-14 05:23:41,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:23:41,855 INFO L471 AbstractCegarLoop]: Abstraction has 8397 states and 25108 transitions. [2024-11-14 05:23:41,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 36 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:41,855 INFO L276 IsEmpty]: Start isEmpty. Operand 8397 states and 25108 transitions. [2024-11-14 05:23:41,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:23:41,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:23:41,865 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:23:41,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2024-11-14 05:23:42,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,105 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:23:42,065 INFO L396 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:23:42,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:23:42,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1898226808, now seen corresponding path program 105 times [2024-11-14 05:23:42,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:23:42,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589800928] [2024-11-14 05:23:42,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:23:42,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:23:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:23:42,281 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:42,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:23:42,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589800928] [2024-11-14 05:23:42,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589800928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:23:42,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767951566] [2024-11-14 05:23:42,282 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:23:42,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:23:42,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:23:42,284 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:23:42,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2024-11-14 05:23:42,331 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:23:42,331 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:23:42,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:23:42,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:23:42,605 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:42,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:23:43,049 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:43,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767951566] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:23:43,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1326704043] [2024-11-14 05:23:43,050 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:23:43,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:23:43,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 35 [2024-11-14 05:23:43,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467308759] [2024-11-14 05:23:43,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:23:43,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-14 05:23:43,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:23:43,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-14 05:23:43,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1072, Unknown=0, NotChecked=0, Total=1260 [2024-11-14 05:23:43,051 INFO L87 Difference]: Start difference. First operand 8397 states and 25108 transitions. Second operand has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:45,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:23:45,447 INFO L93 Difference]: Finished difference Result 9388 states and 27670 transitions. [2024-11-14 05:23:45,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-14 05:23:45,447 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:23:45,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:23:45,476 INFO L225 Difference]: With dead ends: 9388 [2024-11-14 05:23:45,476 INFO L226 Difference]: Without dead ends: 9360 [2024-11-14 05:23:45,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2167 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=850, Invalid=6122, Unknown=0, NotChecked=0, Total=6972 [2024-11-14 05:23:45,480 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 242 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 2047 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 2104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:23:45,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 46 Invalid, 2104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2047 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 05:23:45,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9360 states. [2024-11-14 05:23:45,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9360 to 8395. [2024-11-14 05:23:45,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8395 states, 8394 states have (on average 2.989397188467953) internal successors, (25093), 8394 states have internal predecessors, (25093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:45,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8395 states to 8395 states and 25093 transitions. [2024-11-14 05:23:45,672 INFO L78 Accepts]: Start accepts. Automaton has 8395 states and 25093 transitions. Word has length 23 [2024-11-14 05:23:45,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:23:45,672 INFO L471 AbstractCegarLoop]: Abstraction has 8395 states and 25093 transitions. [2024-11-14 05:23:45,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:45,672 INFO L276 IsEmpty]: Start isEmpty. Operand 8395 states and 25093 transitions. [2024-11-14 05:23:45,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:23:45,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:23:45,681 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:23:45,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2024-11-14 05:23:45,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,106 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:23:45,881 INFO L396 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:23:45,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:23:45,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1796536968, now seen corresponding path program 106 times [2024-11-14 05:23:45,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:23:45,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826524797] [2024-11-14 05:23:45,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:23:45,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:23:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:23:46,104 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:46,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:23:46,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826524797] [2024-11-14 05:23:46,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826524797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:23:46,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284129592] [2024-11-14 05:23:46,104 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:23:46,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:23:46,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:23:46,106 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:23:46,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2024-11-14 05:23:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:23:46,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:23:46,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:23:46,438 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:46,438 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:23:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:46,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284129592] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:23:46,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1018439701] [2024-11-14 05:23:46,859 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:23:46,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:23:46,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 35 [2024-11-14 05:23:46,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378256420] [2024-11-14 05:23:46,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:23:46,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-14 05:23:46,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:23:46,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-14 05:23:46,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1056, Unknown=0, NotChecked=0, Total=1260 [2024-11-14 05:23:46,861 INFO L87 Difference]: Start difference. First operand 8395 states and 25093 transitions. Second operand has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:49,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:23:49,837 INFO L93 Difference]: Finished difference Result 9641 states and 28545 transitions. [2024-11-14 05:23:49,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-14 05:23:49,838 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:23:49,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:23:49,862 INFO L225 Difference]: With dead ends: 9641 [2024-11-14 05:23:49,862 INFO L226 Difference]: Without dead ends: 9625 [2024-11-14 05:23:49,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2691 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1160, Invalid=7212, Unknown=0, NotChecked=0, Total=8372 [2024-11-14 05:23:49,866 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 249 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:23:49,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 66 Invalid, 2293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 05:23:49,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9625 states. [2024-11-14 05:23:49,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9625 to 8387. [2024-11-14 05:23:50,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8387 states, 8386 states have (on average 2.988433102790365) internal successors, (25061), 8386 states have internal predecessors, (25061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:50,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8387 states to 8387 states and 25061 transitions. [2024-11-14 05:23:50,033 INFO L78 Accepts]: Start accepts. Automaton has 8387 states and 25061 transitions. Word has length 23 [2024-11-14 05:23:50,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:23:50,033 INFO L471 AbstractCegarLoop]: Abstraction has 8387 states and 25061 transitions. [2024-11-14 05:23:50,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:50,033 INFO L276 IsEmpty]: Start isEmpty. Operand 8387 states and 25061 transitions. [2024-11-14 05:23:50,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:23:50,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:23:50,044 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:23:50,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2024-11-14 05:23:50,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,107 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:23:50,245 INFO L396 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:23:50,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:23:50,245 INFO L85 PathProgramCache]: Analyzing trace with hash -9271248, now seen corresponding path program 107 times [2024-11-14 05:23:50,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:23:50,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412274924] [2024-11-14 05:23:50,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:23:50,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:23:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:23:50,539 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:50,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:23:50,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412274924] [2024-11-14 05:23:50,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412274924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:23:50,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273673747] [2024-11-14 05:23:50,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:23:50,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:23:50,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:23:50,541 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:23:50,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2024-11-14 05:23:50,588 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 05:23:50,589 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:23:50,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:23:50,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:23:50,947 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:50,947 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:23:51,490 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:23:51,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273673747] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:23:51,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1578004036] [2024-11-14 05:23:51,491 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:23:51,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:23:51,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 34 [2024-11-14 05:23:51,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129129227] [2024-11-14 05:23:51,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:23:51,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 05:23:51,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:23:51,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 05:23:51,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1018, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 05:23:51,492 INFO L87 Difference]: Start difference. First operand 8387 states and 25061 transitions. Second operand has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:56,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:23:56,612 INFO L93 Difference]: Finished difference Result 10353 states and 30566 transitions. [2024-11-14 05:23:56,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2024-11-14 05:23:56,612 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:23:56,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:23:56,638 INFO L225 Difference]: With dead ends: 10353 [2024-11-14 05:23:56,638 INFO L226 Difference]: Without dead ends: 10319 [2024-11-14 05:23:56,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6335 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1924, Invalid=15898, Unknown=0, NotChecked=0, Total=17822 [2024-11-14 05:23:56,643 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 330 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 2933 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 3131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 2933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:23:56,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 43 Invalid, 3131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 2933 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 05:23:56,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10319 states. [2024-11-14 05:23:56,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10319 to 8601. [2024-11-14 05:23:56,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8601 states, 8600 states have (on average 2.9911627906976745) internal successors, (25724), 8600 states have internal predecessors, (25724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:56,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8601 states to 8601 states and 25724 transitions. [2024-11-14 05:23:56,849 INFO L78 Accepts]: Start accepts. Automaton has 8601 states and 25724 transitions. Word has length 23 [2024-11-14 05:23:56,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:23:56,849 INFO L471 AbstractCegarLoop]: Abstraction has 8601 states and 25724 transitions. [2024-11-14 05:23:56,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:23:56,850 INFO L276 IsEmpty]: Start isEmpty. Operand 8601 states and 25724 transitions. [2024-11-14 05:23:56,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:23:56,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:23:56,859 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:23:56,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2024-11-14 05:23:57,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,108 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:23:57,060 INFO L396 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:23:57,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:23:57,061 INFO L85 PathProgramCache]: Analyzing trace with hash -147799398, now seen corresponding path program 108 times [2024-11-14 05:23:57,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:23:57,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713489950] [2024-11-14 05:23:57,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:23:57,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:23:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:23:57,295 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:57,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:23:57,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713489950] [2024-11-14 05:23:57,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713489950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:23:57,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376437622] [2024-11-14 05:23:57,296 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:23:57,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:23:57,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:23:57,297 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:23:57,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2024-11-14 05:23:57,350 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:23:57,350 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:23:57,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:23:57,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:23:57,633 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:23:57,633 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:23:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:23:58,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376437622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:23:58,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2118873798] [2024-11-14 05:23:58,206 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:23:58,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:23:58,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 34 [2024-11-14 05:23:58,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700868017] [2024-11-14 05:23:58,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:23:58,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 05:23:58,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:23:58,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 05:23:58,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1014, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 05:23:58,207 INFO L87 Difference]: Start difference. First operand 8601 states and 25724 transitions. Second operand has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:03,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:24:03,284 INFO L93 Difference]: Finished difference Result 13176 states and 39247 transitions. [2024-11-14 05:24:03,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2024-11-14 05:24:03,285 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:24:03,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:24:03,320 INFO L225 Difference]: With dead ends: 13176 [2024-11-14 05:24:03,320 INFO L226 Difference]: Without dead ends: 13131 [2024-11-14 05:24:03,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5708 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2035, Invalid=14735, Unknown=0, NotChecked=0, Total=16770 [2024-11-14 05:24:03,325 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 320 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 2495 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 2674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 2495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:24:03,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 59 Invalid, 2674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 2495 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-14 05:24:03,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13131 states. [2024-11-14 05:24:03,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13131 to 10353. [2024-11-14 05:24:03,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10353 states, 10352 states have (on average 3.0142967542503865) internal successors, (31204), 10352 states have internal predecessors, (31204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:03,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10353 states to 10353 states and 31204 transitions. [2024-11-14 05:24:03,525 INFO L78 Accepts]: Start accepts. Automaton has 10353 states and 31204 transitions. Word has length 23 [2024-11-14 05:24:03,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:24:03,526 INFO L471 AbstractCegarLoop]: Abstraction has 10353 states and 31204 transitions. [2024-11-14 05:24:03,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:03,526 INFO L276 IsEmpty]: Start isEmpty. Operand 10353 states and 31204 transitions. [2024-11-14 05:24:03,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:24:03,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:24:03,537 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:24:03,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2024-11-14 05:24:03,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,109 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:24:03,737 INFO L396 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:24:03,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:24:03,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1006079282, now seen corresponding path program 109 times [2024-11-14 05:24:03,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:24:03,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678246170] [2024-11-14 05:24:03,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:24:03,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:24:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:24:03,944 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:03,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:24:03,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678246170] [2024-11-14 05:24:03,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678246170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:24:03,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337922029] [2024-11-14 05:24:03,944 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:24:03,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:24:03,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:24:03,946 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:24:03,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2024-11-14 05:24:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:24:03,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:24:03,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:24:04,249 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:04,249 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:24:04,832 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:24:04,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337922029] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:24:04,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [991041414] [2024-11-14 05:24:04,832 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:24:04,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:24:04,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 34 [2024-11-14 05:24:04,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199335920] [2024-11-14 05:24:04,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:24:04,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 05:24:04,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:24:04,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 05:24:04,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1026, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 05:24:04,833 INFO L87 Difference]: Start difference. First operand 10353 states and 31204 transitions. Second operand has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:09,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:24:09,153 INFO L93 Difference]: Finished difference Result 12532 states and 37125 transitions. [2024-11-14 05:24:09,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2024-11-14 05:24:09,153 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:24:09,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:24:09,186 INFO L225 Difference]: With dead ends: 12532 [2024-11-14 05:24:09,186 INFO L226 Difference]: Without dead ends: 12501 [2024-11-14 05:24:09,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4846 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1679, Invalid=12841, Unknown=0, NotChecked=0, Total=14520 [2024-11-14 05:24:09,192 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 270 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2848 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 2975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:24:09,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 69 Invalid, 2975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2848 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-14 05:24:09,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12501 states. [2024-11-14 05:24:09,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12501 to 10329. [2024-11-14 05:24:09,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10329 states, 10328 states have (on average 3.009101471727343) internal successors, (31078), 10328 states have internal predecessors, (31078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:09,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10329 states to 10329 states and 31078 transitions. [2024-11-14 05:24:09,446 INFO L78 Accepts]: Start accepts. Automaton has 10329 states and 31078 transitions. Word has length 23 [2024-11-14 05:24:09,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:24:09,446 INFO L471 AbstractCegarLoop]: Abstraction has 10329 states and 31078 transitions. [2024-11-14 05:24:09,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:09,446 INFO L276 IsEmpty]: Start isEmpty. Operand 10329 states and 31078 transitions. [2024-11-14 05:24:09,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:24:09,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:24:09,458 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:24:09,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2024-11-14 05:24:09,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,110 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:24:09,658 INFO L396 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:24:09,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:24:09,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1670690152, now seen corresponding path program 110 times [2024-11-14 05:24:09,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:24:09,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438886988] [2024-11-14 05:24:09,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:24:09,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:24:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:24:09,888 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:09,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:24:09,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438886988] [2024-11-14 05:24:09,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438886988] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:24:09,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077618742] [2024-11-14 05:24:09,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:24:09,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:24:09,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:24:09,891 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:24:09,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2024-11-14 05:24:09,941 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:24:09,941 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:24:09,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:24:09,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:24:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:10,216 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:24:10,760 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:10,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077618742] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:24:10,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2089608069] [2024-11-14 05:24:10,761 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:24:10,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:24:10,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 34 [2024-11-14 05:24:10,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984092085] [2024-11-14 05:24:10,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:24:10,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 05:24:10,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:24:10,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 05:24:10,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1013, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 05:24:10,762 INFO L87 Difference]: Start difference. First operand 10329 states and 31078 transitions. Second operand has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:16,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:24:16,782 INFO L93 Difference]: Finished difference Result 13008 states and 38473 transitions. [2024-11-14 05:24:16,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2024-11-14 05:24:16,782 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:24:16,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:24:16,817 INFO L225 Difference]: With dead ends: 13008 [2024-11-14 05:24:16,817 INFO L226 Difference]: Without dead ends: 12998 [2024-11-14 05:24:16,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10019 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=3422, Invalid=22984, Unknown=0, NotChecked=0, Total=26406 [2024-11-14 05:24:16,822 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 355 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 3363 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 3531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 3363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:24:16,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 42 Invalid, 3531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 3363 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-14 05:24:16,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12998 states. [2024-11-14 05:24:17,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12998 to 10647. [2024-11-14 05:24:17,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10647 states, 10646 states have (on average 3.024328386248356) internal successors, (32197), 10646 states have internal predecessors, (32197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:17,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10647 states to 10647 states and 32197 transitions. [2024-11-14 05:24:17,048 INFO L78 Accepts]: Start accepts. Automaton has 10647 states and 32197 transitions. Word has length 23 [2024-11-14 05:24:17,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:24:17,048 INFO L471 AbstractCegarLoop]: Abstraction has 10647 states and 32197 transitions. [2024-11-14 05:24:17,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:17,048 INFO L276 IsEmpty]: Start isEmpty. Operand 10647 states and 32197 transitions. [2024-11-14 05:24:17,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:24:17,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:24:17,060 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:24:17,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2024-11-14 05:24:17,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2024-11-14 05:24:17,261 INFO L396 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:24:17,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:24:17,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1532162002, now seen corresponding path program 111 times [2024-11-14 05:24:17,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:24:17,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793965639] [2024-11-14 05:24:17,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:24:17,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:24:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:24:17,489 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:17,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:24:17,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793965639] [2024-11-14 05:24:17,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793965639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:24:17,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146388051] [2024-11-14 05:24:17,490 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:24:17,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:24:17,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:24:17,491 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:24:17,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2024-11-14 05:24:17,541 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:24:17,541 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:24:17,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:24:17,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:24:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:17,803 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:24:18,276 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:18,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146388051] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:24:18,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [900504941] [2024-11-14 05:24:18,276 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:24:18,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:24:18,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 34 [2024-11-14 05:24:18,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302166338] [2024-11-14 05:24:18,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:24:18,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 05:24:18,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:24:18,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 05:24:18,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1016, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 05:24:18,278 INFO L87 Difference]: Start difference. First operand 10647 states and 32197 transitions. Second operand has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:24,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:24:24,123 INFO L93 Difference]: Finished difference Result 12474 states and 37158 transitions. [2024-11-14 05:24:24,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2024-11-14 05:24:24,124 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:24:24,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:24:24,149 INFO L225 Difference]: With dead ends: 12474 [2024-11-14 05:24:24,149 INFO L226 Difference]: Without dead ends: 12431 [2024-11-14 05:24:24,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9999 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3358, Invalid=23702, Unknown=0, NotChecked=0, Total=27060 [2024-11-14 05:24:24,152 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 334 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 3433 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 3602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 3433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:24:24,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 53 Invalid, 3602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 3433 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-14 05:24:24,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12431 states. [2024-11-14 05:24:24,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12431 to 10633. [2024-11-14 05:24:24,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10633 states, 10632 states have (on average 3.0299097065462752) internal successors, (32214), 10632 states have internal predecessors, (32214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:24,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10633 states to 10633 states and 32214 transitions. [2024-11-14 05:24:24,318 INFO L78 Accepts]: Start accepts. Automaton has 10633 states and 32214 transitions. Word has length 23 [2024-11-14 05:24:24,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:24:24,318 INFO L471 AbstractCegarLoop]: Abstraction has 10633 states and 32214 transitions. [2024-11-14 05:24:24,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:24,318 INFO L276 IsEmpty]: Start isEmpty. Operand 10633 states and 32214 transitions. [2024-11-14 05:24:24,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:24:24,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:24:24,329 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:24:24,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2024-11-14 05:24:24,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2024-11-14 05:24:24,529 INFO L396 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:24:24,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:24:24,530 INFO L85 PathProgramCache]: Analyzing trace with hash 673882118, now seen corresponding path program 112 times [2024-11-14 05:24:24,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:24:24,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862572367] [2024-11-14 05:24:24,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:24:24,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:24:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:24:24,726 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:24,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:24:24,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862572367] [2024-11-14 05:24:24,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862572367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:24:24,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040278178] [2024-11-14 05:24:24,727 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:24:24,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:24:24,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:24:24,728 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:24:24,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2024-11-14 05:24:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:24:24,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:24:24,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:24:25,009 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:25,010 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:24:25,427 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:25,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040278178] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:24:25,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1805568603] [2024-11-14 05:24:25,427 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:24:25,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:24:25,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 34 [2024-11-14 05:24:25,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709021115] [2024-11-14 05:24:25,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:24:25,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 05:24:25,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:24:25,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 05:24:25,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1027, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 05:24:25,428 INFO L87 Difference]: Start difference. First operand 10633 states and 32214 transitions. Second operand has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:29,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:24:29,788 INFO L93 Difference]: Finished difference Result 12035 states and 35807 transitions. [2024-11-14 05:24:29,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2024-11-14 05:24:29,789 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:24:29,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:24:29,824 INFO L225 Difference]: With dead ends: 12035 [2024-11-14 05:24:29,824 INFO L226 Difference]: Without dead ends: 12010 [2024-11-14 05:24:29,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6931 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2256, Invalid=17484, Unknown=0, NotChecked=0, Total=19740 [2024-11-14 05:24:29,829 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 335 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 2675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:24:29,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 57 Invalid, 2675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-14 05:24:29,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12010 states. [2024-11-14 05:24:30,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12010 to 10151. [2024-11-14 05:24:30,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10151 states, 10150 states have (on average 3.006206896551724) internal successors, (30513), 10150 states have internal predecessors, (30513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:30,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10151 states to 10151 states and 30513 transitions. [2024-11-14 05:24:30,049 INFO L78 Accepts]: Start accepts. Automaton has 10151 states and 30513 transitions. Word has length 23 [2024-11-14 05:24:30,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:24:30,049 INFO L471 AbstractCegarLoop]: Abstraction has 10151 states and 30513 transitions. [2024-11-14 05:24:30,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:30,049 INFO L276 IsEmpty]: Start isEmpty. Operand 10151 states and 30513 transitions. [2024-11-14 05:24:30,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:24:30,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:24:30,061 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:24:30,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2024-11-14 05:24:30,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2024-11-14 05:24:30,261 INFO L396 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:24:30,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:24:30,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1547622798, now seen corresponding path program 113 times [2024-11-14 05:24:30,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:24:30,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591108681] [2024-11-14 05:24:30,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:24:30,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:24:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:24:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:30,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:24:30,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591108681] [2024-11-14 05:24:30,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591108681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:24:30,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38938726] [2024-11-14 05:24:30,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:24:30,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:24:30,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:24:30,484 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:24:30,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2024-11-14 05:24:30,534 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:24:30,534 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:24:30,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:24:30,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:24:30,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:30,777 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:24:31,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:31,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38938726] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:24:31,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [866864175] [2024-11-14 05:24:31,308 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:24:31,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:24:31,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 34 [2024-11-14 05:24:31,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395520282] [2024-11-14 05:24:31,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:24:31,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 05:24:31,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:24:31,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 05:24:31,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1024, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 05:24:31,309 INFO L87 Difference]: Start difference. First operand 10151 states and 30513 transitions. Second operand has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:34,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:24:34,869 INFO L93 Difference]: Finished difference Result 11202 states and 32990 transitions. [2024-11-14 05:24:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-11-14 05:24:34,870 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:24:34,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:24:34,894 INFO L225 Difference]: With dead ends: 11202 [2024-11-14 05:24:34,894 INFO L226 Difference]: Without dead ends: 11086 [2024-11-14 05:24:34,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5519 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1726, Invalid=14276, Unknown=0, NotChecked=0, Total=16002 [2024-11-14 05:24:34,898 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 291 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 2425 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 2528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:24:34,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 67 Invalid, 2528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2425 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 05:24:34,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11086 states. [2024-11-14 05:24:35,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11086 to 9178. [2024-11-14 05:24:35,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9178 states, 9177 states have (on average 2.9342922523700556) internal successors, (26928), 9177 states have internal predecessors, (26928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:35,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9178 states to 9178 states and 26928 transitions. [2024-11-14 05:24:35,046 INFO L78 Accepts]: Start accepts. Automaton has 9178 states and 26928 transitions. Word has length 23 [2024-11-14 05:24:35,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:24:35,046 INFO L471 AbstractCegarLoop]: Abstraction has 9178 states and 26928 transitions. [2024-11-14 05:24:35,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 34 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:35,046 INFO L276 IsEmpty]: Start isEmpty. Operand 9178 states and 26928 transitions. [2024-11-14 05:24:35,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:24:35,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:24:35,055 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:24:35,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2024-11-14 05:24:35,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2024-11-14 05:24:35,255 INFO L396 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:24:35,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:24:35,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1101272488, now seen corresponding path program 114 times [2024-11-14 05:24:35,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:24:35,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727479350] [2024-11-14 05:24:35,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:24:35,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:24:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:24:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:35,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:24:35,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727479350] [2024-11-14 05:24:35,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727479350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:24:35,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109949894] [2024-11-14 05:24:35,475 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:24:35,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:24:35,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:24:35,477 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:24:35,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2024-11-14 05:24:35,521 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:24:35,522 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:24:35,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:24:35,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:24:35,770 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:35,770 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:24:36,145 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:36,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109949894] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:24:36,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [779377888] [2024-11-14 05:24:36,145 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:24:36,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:24:36,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 35 [2024-11-14 05:24:36,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181443299] [2024-11-14 05:24:36,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:24:36,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-14 05:24:36,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:24:36,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-14 05:24:36,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1034, Unknown=0, NotChecked=0, Total=1260 [2024-11-14 05:24:36,147 INFO L87 Difference]: Start difference. First operand 9178 states and 26928 transitions. Second operand has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:41,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:24:41,497 INFO L93 Difference]: Finished difference Result 11559 states and 33438 transitions. [2024-11-14 05:24:41,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2024-11-14 05:24:41,497 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:24:41,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:24:41,523 INFO L225 Difference]: With dead ends: 11559 [2024-11-14 05:24:41,523 INFO L226 Difference]: Without dead ends: 11549 [2024-11-14 05:24:41,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8236 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=3039, Invalid=19611, Unknown=0, NotChecked=0, Total=22650 [2024-11-14 05:24:41,528 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 289 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2694 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 2808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:24:41,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 51 Invalid, 2808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2694 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 05:24:41,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11549 states. [2024-11-14 05:24:41,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11549 to 9548. [2024-11-14 05:24:41,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9548 states, 9547 states have (on average 2.937990991934639) internal successors, (28049), 9547 states have internal predecessors, (28049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:41,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9548 states to 9548 states and 28049 transitions. [2024-11-14 05:24:41,714 INFO L78 Accepts]: Start accepts. Automaton has 9548 states and 28049 transitions. Word has length 23 [2024-11-14 05:24:41,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:24:41,715 INFO L471 AbstractCegarLoop]: Abstraction has 9548 states and 28049 transitions. [2024-11-14 05:24:41,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:41,715 INFO L276 IsEmpty]: Start isEmpty. Operand 9548 states and 28049 transitions. [2024-11-14 05:24:41,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:24:41,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:24:41,725 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:24:41,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2024-11-14 05:24:41,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2024-11-14 05:24:41,926 INFO L396 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:24:41,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:24:41,926 INFO L85 PathProgramCache]: Analyzing trace with hash 962744338, now seen corresponding path program 115 times [2024-11-14 05:24:41,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:24:41,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644139665] [2024-11-14 05:24:41,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:24:41,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:24:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:24:42,148 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:42,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:24:42,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644139665] [2024-11-14 05:24:42,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644139665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:24:42,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462744984] [2024-11-14 05:24:42,149 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:24:42,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:24:42,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:24:42,151 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:24:42,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2024-11-14 05:24:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:24:42,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:24:42,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:24:42,523 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:42,523 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:24:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:42,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462744984] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:24:42,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [602013049] [2024-11-14 05:24:42,911 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:24:42,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:24:42,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 35 [2024-11-14 05:24:42,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72761744] [2024-11-14 05:24:42,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:24:42,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-14 05:24:42,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:24:42,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-14 05:24:42,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1035, Unknown=0, NotChecked=0, Total=1260 [2024-11-14 05:24:42,912 INFO L87 Difference]: Start difference. First operand 9548 states and 28049 transitions. Second operand has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:46,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:24:46,309 INFO L93 Difference]: Finished difference Result 11019 states and 32058 transitions. [2024-11-14 05:24:46,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-14 05:24:46,309 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:24:46,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:24:46,335 INFO L225 Difference]: With dead ends: 11019 [2024-11-14 05:24:46,335 INFO L226 Difference]: Without dead ends: 11000 [2024-11-14 05:24:46,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3901 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1860, Invalid=10130, Unknown=0, NotChecked=0, Total=11990 [2024-11-14 05:24:46,339 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 278 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1901 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 2006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:24:46,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 45 Invalid, 2006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1901 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 05:24:46,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11000 states. [2024-11-14 05:24:46,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11000 to 9526. [2024-11-14 05:24:46,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9526 states, 9525 states have (on average 2.936062992125984) internal successors, (27966), 9525 states have internal predecessors, (27966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:46,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9526 states to 9526 states and 27966 transitions. [2024-11-14 05:24:46,515 INFO L78 Accepts]: Start accepts. Automaton has 9526 states and 27966 transitions. Word has length 23 [2024-11-14 05:24:46,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:24:46,516 INFO L471 AbstractCegarLoop]: Abstraction has 9526 states and 27966 transitions. [2024-11-14 05:24:46,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:46,516 INFO L276 IsEmpty]: Start isEmpty. Operand 9526 states and 27966 transitions. [2024-11-14 05:24:46,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:24:46,527 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:24:46,527 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:24:46,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2024-11-14 05:24:46,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2024-11-14 05:24:46,728 INFO L396 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:24:46,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:24:46,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1829188586, now seen corresponding path program 116 times [2024-11-14 05:24:46,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:24:46,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674633271] [2024-11-14 05:24:46,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:24:46,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:24:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:24:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:46,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:24:46,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674633271] [2024-11-14 05:24:46,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674633271] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:24:46,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761035881] [2024-11-14 05:24:46,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:24:46,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:24:46,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:24:46,984 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:24:46,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2024-11-14 05:24:47,030 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:24:47,030 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:24:47,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:24:47,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:24:47,280 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:47,280 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:24:47,712 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:47,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761035881] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:24:47,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2028297740] [2024-11-14 05:24:47,712 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:24:47,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:24:47,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 35 [2024-11-14 05:24:47,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604245178] [2024-11-14 05:24:47,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:24:47,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-14 05:24:47,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:24:47,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-14 05:24:47,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1042, Unknown=0, NotChecked=0, Total=1260 [2024-11-14 05:24:47,713 INFO L87 Difference]: Start difference. First operand 9526 states and 27966 transitions. Second operand has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:51,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:24:51,673 INFO L93 Difference]: Finished difference Result 11828 states and 34276 transitions. [2024-11-14 05:24:51,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-11-14 05:24:51,673 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:24:51,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:24:51,713 INFO L225 Difference]: With dead ends: 11828 [2024-11-14 05:24:51,713 INFO L226 Difference]: Without dead ends: 11809 [2024-11-14 05:24:51,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4379 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1975, Invalid=11135, Unknown=0, NotChecked=0, Total=13110 [2024-11-14 05:24:51,720 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 289 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 2475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:24:51,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 59 Invalid, 2475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 2349 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 05:24:51,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11809 states. [2024-11-14 05:24:51,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11809 to 9592. [2024-11-14 05:24:51,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9592 states, 9591 states have (on average 2.9372328224377022) internal successors, (28171), 9591 states have internal predecessors, (28171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:51,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9592 states to 9592 states and 28171 transitions. [2024-11-14 05:24:51,974 INFO L78 Accepts]: Start accepts. Automaton has 9592 states and 28171 transitions. Word has length 23 [2024-11-14 05:24:51,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:24:51,974 INFO L471 AbstractCegarLoop]: Abstraction has 9592 states and 28171 transitions. [2024-11-14 05:24:51,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:51,975 INFO L276 IsEmpty]: Start isEmpty. Operand 9592 states and 28171 transitions. [2024-11-14 05:24:51,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:24:51,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:24:51,985 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:24:51,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2024-11-14 05:24:52,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2024-11-14 05:24:52,185 INFO L396 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:24:52,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:24:52,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1607498826, now seen corresponding path program 117 times [2024-11-14 05:24:52,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:24:52,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616671447] [2024-11-14 05:24:52,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:24:52,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:24:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:24:52,395 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:52,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:24:52,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616671447] [2024-11-14 05:24:52,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616671447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:24:52,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32181364] [2024-11-14 05:24:52,395 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:24:52,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:24:52,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:24:52,397 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:24:52,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2024-11-14 05:24:52,442 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:24:52,442 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:24:52,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:24:52,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:24:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:52,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:24:53,117 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:53,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32181364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:24:53,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [825578709] [2024-11-14 05:24:53,118 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:24:53,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:24:53,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 35 [2024-11-14 05:24:53,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332965794] [2024-11-14 05:24:53,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:24:53,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-14 05:24:53,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:24:53,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-14 05:24:53,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1060, Unknown=0, NotChecked=0, Total=1260 [2024-11-14 05:24:53,119 INFO L87 Difference]: Start difference. First operand 9592 states and 28171 transitions. Second operand has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:56,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:24:56,182 INFO L93 Difference]: Finished difference Result 11298 states and 32719 transitions. [2024-11-14 05:24:56,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-11-14 05:24:56,182 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:24:56,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:24:56,210 INFO L225 Difference]: With dead ends: 11298 [2024-11-14 05:24:56,210 INFO L226 Difference]: Without dead ends: 11266 [2024-11-14 05:24:56,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3395 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1359, Invalid=9147, Unknown=0, NotChecked=0, Total=10506 [2024-11-14 05:24:56,214 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 244 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1993 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:24:56,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 58 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1993 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 05:24:56,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11266 states. [2024-11-14 05:24:56,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11266 to 9482. [2024-11-14 05:24:56,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9482 states, 9481 states have (on average 2.933445839046514) internal successors, (27812), 9481 states have internal predecessors, (27812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:56,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9482 states to 9482 states and 27812 transitions. [2024-11-14 05:24:56,423 INFO L78 Accepts]: Start accepts. Automaton has 9482 states and 27812 transitions. Word has length 23 [2024-11-14 05:24:56,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:24:56,424 INFO L471 AbstractCegarLoop]: Abstraction has 9482 states and 27812 transitions. [2024-11-14 05:24:56,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 35 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:24:56,424 INFO L276 IsEmpty]: Start isEmpty. Operand 9482 states and 27812 transitions. [2024-11-14 05:24:56,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:24:56,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:24:56,434 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:24:56,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2024-11-14 05:24:56,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2024-11-14 05:24:56,634 INFO L396 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:24:56,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:24:56,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1728542768, now seen corresponding path program 118 times [2024-11-14 05:24:56,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:24:56,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080425104] [2024-11-14 05:24:56,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:24:56,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:24:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:24:56,848 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:56,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:24:56,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080425104] [2024-11-14 05:24:56,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080425104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:24:56,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549200231] [2024-11-14 05:24:56,848 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:24:56,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:24:56,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:24:56,850 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:24:56,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2024-11-14 05:24:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:24:56,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 05:24:56,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:24:57,167 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:24:57,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:24:57,688 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:24:57,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549200231] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:24:57,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [272140658] [2024-11-14 05:24:57,688 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:24:57,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:24:57,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 34 [2024-11-14 05:24:57,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855084621] [2024-11-14 05:24:57,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:24:57,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 05:24:57,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:24:57,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 05:24:57,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1013, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 05:24:57,689 INFO L87 Difference]: Start difference. First operand 9482 states and 27812 transitions. Second operand has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:01,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:01,568 INFO L93 Difference]: Finished difference Result 11636 states and 33792 transitions. [2024-11-14 05:25:01,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-14 05:25:01,569 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-14 05:25:01,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:01,595 INFO L225 Difference]: With dead ends: 11636 [2024-11-14 05:25:01,595 INFO L226 Difference]: Without dead ends: 11594 [2024-11-14 05:25:01,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2560 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1023, Invalid=7349, Unknown=0, NotChecked=0, Total=8372 [2024-11-14 05:25:01,598 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 212 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 2772 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 2880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:01,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 49 Invalid, 2880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2772 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-14 05:25:01,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11594 states. [2024-11-14 05:25:01,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11594 to 9608. [2024-11-14 05:25:01,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9608 states, 9607 states have (on average 2.927969189132924) internal successors, (28129), 9607 states have internal predecessors, (28129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:01,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9608 states to 9608 states and 28129 transitions. [2024-11-14 05:25:01,810 INFO L78 Accepts]: Start accepts. Automaton has 9608 states and 28129 transitions. Word has length 23 [2024-11-14 05:25:01,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:01,811 INFO L471 AbstractCegarLoop]: Abstraction has 9608 states and 28129 transitions. [2024-11-14 05:25:01,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.542857142857143) internal successors, (54), 34 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:01,811 INFO L276 IsEmpty]: Start isEmpty. Operand 9608 states and 28129 transitions. [2024-11-14 05:25:01,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:25:01,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:01,825 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:01,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2024-11-14 05:25:02,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable119 [2024-11-14 05:25:02,025 INFO L396 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:25:02,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:02,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1059931985, now seen corresponding path program 119 times [2024-11-14 05:25:02,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:02,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433810159] [2024-11-14 05:25:02,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:02,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:02,241 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:02,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:25:02,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433810159] [2024-11-14 05:25:02,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433810159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:25:02,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834402426] [2024-11-14 05:25:02,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:25:02,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:02,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:25:02,243 INFO L229 MonitoredProcess]: Starting monitored process 120 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:25:02,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2024-11-14 05:25:02,290 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:25:02,290 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:25:02,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:25:02,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:02,693 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:02,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:25:03,311 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:03,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834402426] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:25:03,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1820738858] [2024-11-14 05:25:03,311 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:25:03,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:25:03,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 38 [2024-11-14 05:25:03,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695663784] [2024-11-14 05:25:03,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:25:03,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-14 05:25:03,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:25:03,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-14 05:25:03,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1272, Unknown=0, NotChecked=0, Total=1482 [2024-11-14 05:25:03,313 INFO L87 Difference]: Start difference. First operand 9608 states and 28129 transitions. Second operand has 39 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 38 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:06,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:06,901 INFO L93 Difference]: Finished difference Result 12021 states and 34572 transitions. [2024-11-14 05:25:06,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-14 05:25:06,901 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 38 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:25:06,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:06,929 INFO L225 Difference]: With dead ends: 12021 [2024-11-14 05:25:06,929 INFO L226 Difference]: Without dead ends: 12007 [2024-11-14 05:25:06,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3551 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1330, Invalid=9590, Unknown=0, NotChecked=0, Total=10920 [2024-11-14 05:25:06,932 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 213 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:06,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 16 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1582 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 05:25:06,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12007 states. [2024-11-14 05:25:07,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12007 to 9704. [2024-11-14 05:25:07,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9704 states, 9703 states have (on average 2.932185921879831) internal successors, (28451), 9703 states have internal predecessors, (28451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:07,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9704 states to 9704 states and 28451 transitions. [2024-11-14 05:25:07,110 INFO L78 Accepts]: Start accepts. Automaton has 9704 states and 28451 transitions. Word has length 24 [2024-11-14 05:25:07,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:07,110 INFO L471 AbstractCegarLoop]: Abstraction has 9704 states and 28451 transitions. [2024-11-14 05:25:07,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 38 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:07,110 INFO L276 IsEmpty]: Start isEmpty. Operand 9704 states and 28451 transitions. [2024-11-14 05:25:07,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:25:07,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:07,122 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:07,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2024-11-14 05:25:07,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,120 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:07,323 INFO L396 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:25:07,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:07,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1597787563, now seen corresponding path program 120 times [2024-11-14 05:25:07,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:07,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650360477] [2024-11-14 05:25:07,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:07,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:07,522 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:07,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:25:07,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650360477] [2024-11-14 05:25:07,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650360477] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:25:07,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852244733] [2024-11-14 05:25:07,523 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:25:07,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:07,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:25:07,524 INFO L229 MonitoredProcess]: Starting monitored process 121 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:25:07,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2024-11-14 05:25:07,571 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:25:07,572 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:25:07,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-14 05:25:07,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:07,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:25:08,416 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:08,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852244733] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:25:08,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1081849936] [2024-11-14 05:25:08,417 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:25:08,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:25:08,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 38 [2024-11-14 05:25:08,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246228742] [2024-11-14 05:25:08,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:25:08,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-14 05:25:08,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:25:08,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-14 05:25:08,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1286, Unknown=0, NotChecked=0, Total=1482 [2024-11-14 05:25:08,418 INFO L87 Difference]: Start difference. First operand 9704 states and 28451 transitions. Second operand has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:10,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:10,987 INFO L93 Difference]: Finished difference Result 10880 states and 31657 transitions. [2024-11-14 05:25:10,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-14 05:25:10,988 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:25:10,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:11,015 INFO L225 Difference]: With dead ends: 10880 [2024-11-14 05:25:11,015 INFO L226 Difference]: Without dead ends: 10780 [2024-11-14 05:25:11,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2782 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=980, Invalid=7950, Unknown=0, NotChecked=0, Total=8930 [2024-11-14 05:25:11,019 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 182 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 1758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:11,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 25 Invalid, 1758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 05:25:11,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10780 states. [2024-11-14 05:25:11,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10780 to 9734. [2024-11-14 05:25:11,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9734 states, 9733 states have (on average 2.9168807150929825) internal successors, (28390), 9733 states have internal predecessors, (28390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:11,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9734 states to 9734 states and 28390 transitions. [2024-11-14 05:25:11,196 INFO L78 Accepts]: Start accepts. Automaton has 9734 states and 28390 transitions. Word has length 24 [2024-11-14 05:25:11,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:11,196 INFO L471 AbstractCegarLoop]: Abstraction has 9734 states and 28390 transitions. [2024-11-14 05:25:11,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:11,196 INFO L276 IsEmpty]: Start isEmpty. Operand 9734 states and 28390 transitions. [2024-11-14 05:25:11,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:25:11,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:11,207 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:11,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2024-11-14 05:25:11,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,121 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:11,408 INFO L396 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:25:11,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:11,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1489406081, now seen corresponding path program 121 times [2024-11-14 05:25:11,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:11,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178349056] [2024-11-14 05:25:11,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:11,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:11,692 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:11,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:25:11,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178349056] [2024-11-14 05:25:11,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178349056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:25:11,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160592966] [2024-11-14 05:25:11,692 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:25:11,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:11,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:25:11,694 INFO L229 MonitoredProcess]: Starting monitored process 122 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:25:11,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2024-11-14 05:25:11,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:11,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:25:11,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:12,146 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:12,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:25:12,862 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:12,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160592966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:25:12,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [729117077] [2024-11-14 05:25:12,862 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:25:12,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:25:12,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:25:12,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805975555] [2024-11-14 05:25:12,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:25:12,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:25:12,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:25:12,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:25:12,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1332, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:25:12,864 INFO L87 Difference]: Start difference. First operand 9734 states and 28390 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:15,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:15,429 INFO L93 Difference]: Finished difference Result 11625 states and 33562 transitions. [2024-11-14 05:25:15,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-14 05:25:15,430 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:25:15,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:15,457 INFO L225 Difference]: With dead ends: 11625 [2024-11-14 05:25:15,457 INFO L226 Difference]: Without dead ends: 11607 [2024-11-14 05:25:15,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2056 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=950, Invalid=6022, Unknown=0, NotChecked=0, Total=6972 [2024-11-14 05:25:15,461 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 184 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 1629 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 1717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:15,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 19 Invalid, 1717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1629 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 05:25:15,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11607 states. [2024-11-14 05:25:15,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11607 to 9818. [2024-11-14 05:25:15,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9818 states, 9817 states have (on average 2.916777019456046) internal successors, (28634), 9817 states have internal predecessors, (28634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:15,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9818 states to 9818 states and 28634 transitions. [2024-11-14 05:25:15,637 INFO L78 Accepts]: Start accepts. Automaton has 9818 states and 28634 transitions. Word has length 24 [2024-11-14 05:25:15,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:15,637 INFO L471 AbstractCegarLoop]: Abstraction has 9818 states and 28634 transitions. [2024-11-14 05:25:15,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:15,637 INFO L276 IsEmpty]: Start isEmpty. Operand 9818 states and 28634 transitions. [2024-11-14 05:25:15,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:25:15,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:15,648 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:15,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2024-11-14 05:25:15,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122,122 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:15,849 INFO L396 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:25:15,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:15,849 INFO L85 PathProgramCache]: Analyzing trace with hash 521097673, now seen corresponding path program 122 times [2024-11-14 05:25:15,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:15,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56945575] [2024-11-14 05:25:15,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:15,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:16,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:25:16,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56945575] [2024-11-14 05:25:16,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56945575] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:25:16,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852757137] [2024-11-14 05:25:16,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:25:16,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:16,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:25:16,089 INFO L229 MonitoredProcess]: Starting monitored process 123 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:25:16,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2024-11-14 05:25:16,135 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 05:25:16,135 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:25:16,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:25:16,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:16,590 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:16,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:25:17,325 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:17,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852757137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:25:17,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [13453468] [2024-11-14 05:25:17,326 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:25:17,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:25:17,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:25:17,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842283771] [2024-11-14 05:25:17,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:25:17,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:25:17,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:25:17,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:25:17,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1314, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:25:17,327 INFO L87 Difference]: Start difference. First operand 9818 states and 28634 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:20,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:20,476 INFO L93 Difference]: Finished difference Result 11984 states and 34588 transitions. [2024-11-14 05:25:20,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-14 05:25:20,477 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:25:20,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:20,507 INFO L225 Difference]: With dead ends: 11984 [2024-11-14 05:25:20,507 INFO L226 Difference]: Without dead ends: 11972 [2024-11-14 05:25:20,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2305 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1131, Invalid=6701, Unknown=0, NotChecked=0, Total=7832 [2024-11-14 05:25:20,511 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 225 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1545 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:20,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 20 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1545 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 05:25:20,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11972 states. [2024-11-14 05:25:20,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11972 to 9754. [2024-11-14 05:25:20,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9754 states, 9753 states have (on average 2.9205372705834103) internal successors, (28484), 9753 states have internal predecessors, (28484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:20,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9754 states to 9754 states and 28484 transitions. [2024-11-14 05:25:20,690 INFO L78 Accepts]: Start accepts. Automaton has 9754 states and 28484 transitions. Word has length 24 [2024-11-14 05:25:20,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:20,690 INFO L471 AbstractCegarLoop]: Abstraction has 9754 states and 28484 transitions. [2024-11-14 05:25:20,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:20,691 INFO L276 IsEmpty]: Start isEmpty. Operand 9754 states and 28484 transitions. [2024-11-14 05:25:20,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:25:20,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:20,702 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:20,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2024-11-14 05:25:20,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,123 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:20,902 INFO L396 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:25:20,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:20,902 INFO L85 PathProgramCache]: Analyzing trace with hash -2070986713, now seen corresponding path program 123 times [2024-11-14 05:25:20,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:20,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246261009] [2024-11-14 05:25:20,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:20,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:21,144 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:21,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:25:21,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246261009] [2024-11-14 05:25:21,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246261009] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:25:21,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979033797] [2024-11-14 05:25:21,145 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:25:21,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:21,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:25:21,147 INFO L229 MonitoredProcess]: Starting monitored process 124 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:25:21,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2024-11-14 05:25:21,194 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:25:21,194 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:25:21,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:25:21,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:21,684 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:21,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:25:22,473 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:22,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979033797] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:25:22,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1319837922] [2024-11-14 05:25:22,474 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:25:22,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:25:22,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:25:22,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138519967] [2024-11-14 05:25:22,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:25:22,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:25:22,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:25:22,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:25:22,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1357, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:25:22,475 INFO L87 Difference]: Start difference. First operand 9754 states and 28484 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:24,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:24,379 INFO L93 Difference]: Finished difference Result 11327 states and 32775 transitions. [2024-11-14 05:25:24,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-14 05:25:24,379 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:25:24,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:24,407 INFO L225 Difference]: With dead ends: 11327 [2024-11-14 05:25:24,407 INFO L226 Difference]: Without dead ends: 11307 [2024-11-14 05:25:24,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1116 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=583, Invalid=3973, Unknown=0, NotChecked=0, Total=4556 [2024-11-14 05:25:24,411 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 127 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1561 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:24,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 20 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1561 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 05:25:24,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11307 states. [2024-11-14 05:25:24,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11307 to 9814. [2024-11-14 05:25:24,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9814 states, 9813 states have (on average 2.9204116987669417) internal successors, (28658), 9813 states have internal predecessors, (28658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:24,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9814 states to 9814 states and 28658 transitions. [2024-11-14 05:25:24,585 INFO L78 Accepts]: Start accepts. Automaton has 9814 states and 28658 transitions. Word has length 24 [2024-11-14 05:25:24,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:24,586 INFO L471 AbstractCegarLoop]: Abstraction has 9814 states and 28658 transitions. [2024-11-14 05:25:24,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:24,586 INFO L276 IsEmpty]: Start isEmpty. Operand 9814 states and 28658 transitions. [2024-11-14 05:25:24,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:25:24,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:24,597 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:24,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2024-11-14 05:25:24,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2024-11-14 05:25:24,797 INFO L396 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:25:24,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:24,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1100965667, now seen corresponding path program 124 times [2024-11-14 05:25:24,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:24,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062674439] [2024-11-14 05:25:24,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:24,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:25,058 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:25,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:25:25,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062674439] [2024-11-14 05:25:25,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062674439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:25:25,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213409060] [2024-11-14 05:25:25,058 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:25:25,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:25,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:25:25,060 INFO L229 MonitoredProcess]: Starting monitored process 125 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:25:25,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2024-11-14 05:25:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:25,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:25:25,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:25,551 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:25,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:25:26,332 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:26,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213409060] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:25:26,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2024177210] [2024-11-14 05:25:26,332 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:25:26,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:25:26,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:25:26,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908504154] [2024-11-14 05:25:26,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:25:26,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:25:26,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:25:26,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:25:26,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=1316, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:25:26,333 INFO L87 Difference]: Start difference. First operand 9814 states and 28658 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:30,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:30,776 INFO L93 Difference]: Finished difference Result 12861 states and 36892 transitions. [2024-11-14 05:25:30,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-14 05:25:30,777 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:25:30,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:30,809 INFO L225 Difference]: With dead ends: 12861 [2024-11-14 05:25:30,809 INFO L226 Difference]: Without dead ends: 12835 [2024-11-14 05:25:30,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3802 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1667, Invalid=10323, Unknown=0, NotChecked=0, Total=11990 [2024-11-14 05:25:30,814 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 230 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 2403 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 2536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:30,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 29 Invalid, 2536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2403 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 05:25:30,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12835 states. [2024-11-14 05:25:30,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12835 to 9768. [2024-11-14 05:25:30,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9768 states, 9767 states have (on average 2.9225964984130233) internal successors, (28545), 9767 states have internal predecessors, (28545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:30,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9768 states to 9768 states and 28545 transitions. [2024-11-14 05:25:31,005 INFO L78 Accepts]: Start accepts. Automaton has 9768 states and 28545 transitions. Word has length 24 [2024-11-14 05:25:31,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:31,005 INFO L471 AbstractCegarLoop]: Abstraction has 9768 states and 28545 transitions. [2024-11-14 05:25:31,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:31,005 INFO L276 IsEmpty]: Start isEmpty. Operand 9768 states and 28545 transitions. [2024-11-14 05:25:31,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:25:31,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:31,016 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:31,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2024-11-14 05:25:31,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2024-11-14 05:25:31,217 INFO L396 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:25:31,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:31,217 INFO L85 PathProgramCache]: Analyzing trace with hash 962437517, now seen corresponding path program 125 times [2024-11-14 05:25:31,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:31,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713765142] [2024-11-14 05:25:31,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:31,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:31,511 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:31,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:25:31,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713765142] [2024-11-14 05:25:31,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713765142] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:25:31,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130228317] [2024-11-14 05:25:31,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:25:31,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:31,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:25:31,514 INFO L229 MonitoredProcess]: Starting monitored process 126 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:25:31,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2024-11-14 05:25:31,564 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-14 05:25:31,564 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:25:31,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:25:31,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:31,995 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:31,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:25:32,755 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:32,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130228317] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:25:32,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1380287754] [2024-11-14 05:25:32,755 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:25:32,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:25:32,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:25:32,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906680723] [2024-11-14 05:25:32,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:25:32,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:25:32,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:25:32,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:25:32,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1305, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:25:32,757 INFO L87 Difference]: Start difference. First operand 9768 states and 28545 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:36,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:36,157 INFO L93 Difference]: Finished difference Result 12689 states and 36428 transitions. [2024-11-14 05:25:36,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-14 05:25:36,157 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:25:36,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:36,188 INFO L225 Difference]: With dead ends: 12689 [2024-11-14 05:25:36,188 INFO L226 Difference]: Without dead ends: 12663 [2024-11-14 05:25:36,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2786 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1399, Invalid=7531, Unknown=0, NotChecked=0, Total=8930 [2024-11-14 05:25:36,193 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 270 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 2151 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 2265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:36,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 29 Invalid, 2265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2151 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 05:25:36,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12663 states. [2024-11-14 05:25:36,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12663 to 9768. [2024-11-14 05:25:36,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9768 states, 9767 states have (on average 2.922391727244804) internal successors, (28543), 9767 states have internal predecessors, (28543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:36,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9768 states to 9768 states and 28543 transitions. [2024-11-14 05:25:36,381 INFO L78 Accepts]: Start accepts. Automaton has 9768 states and 28543 transitions. Word has length 24 [2024-11-14 05:25:36,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:36,381 INFO L471 AbstractCegarLoop]: Abstraction has 9768 states and 28543 transitions. [2024-11-14 05:25:36,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:36,382 INFO L276 IsEmpty]: Start isEmpty. Operand 9768 states and 28543 transitions. [2024-11-14 05:25:36,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:25:36,399 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:36,399 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:36,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2024-11-14 05:25:36,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2024-11-14 05:25:36,601 INFO L396 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:25:36,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:36,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1491118719, now seen corresponding path program 126 times [2024-11-14 05:25:36,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:36,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012959678] [2024-11-14 05:25:36,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:36,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:36,872 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:36,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:25:36,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012959678] [2024-11-14 05:25:36,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012959678] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:25:36,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057908149] [2024-11-14 05:25:36,873 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:25:36,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:36,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:25:36,875 INFO L229 MonitoredProcess]: Starting monitored process 127 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:25:36,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2024-11-14 05:25:36,921 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:25:36,921 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:25:36,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:25:36,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:37,325 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:37,325 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:25:38,051 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:38,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057908149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:25:38,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1458310022] [2024-11-14 05:25:38,051 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:25:38,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:25:38,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:25:38,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187458378] [2024-11-14 05:25:38,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:25:38,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:25:38,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:25:38,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:25:38,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1345, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:25:38,053 INFO L87 Difference]: Start difference. First operand 9768 states and 28543 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:40,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:40,701 INFO L93 Difference]: Finished difference Result 12039 states and 34663 transitions. [2024-11-14 05:25:40,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-14 05:25:40,702 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:25:40,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:40,732 INFO L225 Difference]: With dead ends: 12039 [2024-11-14 05:25:40,732 INFO L226 Difference]: Without dead ends: 12017 [2024-11-14 05:25:40,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2180 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=912, Invalid=6570, Unknown=0, NotChecked=0, Total=7482 [2024-11-14 05:25:40,737 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 153 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 1653 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 1759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:40,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 17 Invalid, 1759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1653 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 05:25:40,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12017 states. [2024-11-14 05:25:40,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12017 to 9774. [2024-11-14 05:25:40,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9774 states, 9773 states have (on average 2.9243835055765888) internal successors, (28580), 9773 states have internal predecessors, (28580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:40,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9774 states to 9774 states and 28580 transitions. [2024-11-14 05:25:40,920 INFO L78 Accepts]: Start accepts. Automaton has 9774 states and 28580 transitions. Word has length 24 [2024-11-14 05:25:40,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:40,920 INFO L471 AbstractCegarLoop]: Abstraction has 9774 states and 28580 transitions. [2024-11-14 05:25:40,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:40,921 INFO L276 IsEmpty]: Start isEmpty. Operand 9774 states and 28580 transitions. [2024-11-14 05:25:40,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:25:40,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:40,935 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:40,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2024-11-14 05:25:41,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2024-11-14 05:25:41,136 INFO L396 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:25:41,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:41,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1538949905, now seen corresponding path program 127 times [2024-11-14 05:25:41,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:41,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960306120] [2024-11-14 05:25:41,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:41,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:41,337 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:41,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:25:41,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960306120] [2024-11-14 05:25:41,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960306120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:25:41,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419107054] [2024-11-14 05:25:41,337 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:25:41,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:41,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:25:41,339 INFO L229 MonitoredProcess]: Starting monitored process 128 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:25:41,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2024-11-14 05:25:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:41,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:25:41,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:41,791 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:41,791 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:25:42,473 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:42,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419107054] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:25:42,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1630608447] [2024-11-14 05:25:42,473 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:25:42,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:25:42,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 38 [2024-11-14 05:25:42,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158312664] [2024-11-14 05:25:42,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:25:42,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-14 05:25:42,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:25:42,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-14 05:25:42,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1275, Unknown=0, NotChecked=0, Total=1482 [2024-11-14 05:25:42,474 INFO L87 Difference]: Start difference. First operand 9774 states and 28580 transitions. Second operand has 39 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 38 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:45,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:45,633 INFO L93 Difference]: Finished difference Result 12169 states and 34982 transitions. [2024-11-14 05:25:45,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-14 05:25:45,634 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 38 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:25:45,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:45,665 INFO L225 Difference]: With dead ends: 12169 [2024-11-14 05:25:45,665 INFO L226 Difference]: Without dead ends: 12155 [2024-11-14 05:25:45,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3153 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1179, Invalid=8523, Unknown=0, NotChecked=0, Total=9702 [2024-11-14 05:25:45,670 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 214 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:45,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 12 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 05:25:45,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12155 states. [2024-11-14 05:25:45,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12155 to 9850. [2024-11-14 05:25:45,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9850 states, 9849 states have (on average 2.9292313940501575) internal successors, (28850), 9849 states have internal predecessors, (28850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:45,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9850 states to 9850 states and 28850 transitions. [2024-11-14 05:25:45,864 INFO L78 Accepts]: Start accepts. Automaton has 9850 states and 28850 transitions. Word has length 24 [2024-11-14 05:25:45,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:45,864 INFO L471 AbstractCegarLoop]: Abstraction has 9850 states and 28850 transitions. [2024-11-14 05:25:45,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 38 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:45,864 INFO L276 IsEmpty]: Start isEmpty. Operand 9850 states and 28850 transitions. [2024-11-14 05:25:45,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:25:45,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:45,876 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:45,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2024-11-14 05:25:46,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,128 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:46,076 INFO L396 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:25:46,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:46,077 INFO L85 PathProgramCache]: Analyzing trace with hash 2076805483, now seen corresponding path program 128 times [2024-11-14 05:25:46,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:46,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671508593] [2024-11-14 05:25:46,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:46,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:46,288 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:46,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:25:46,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671508593] [2024-11-14 05:25:46,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671508593] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:25:46,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39169631] [2024-11-14 05:25:46,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:25:46,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:46,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:25:46,290 INFO L229 MonitoredProcess]: Starting monitored process 129 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:25:46,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2024-11-14 05:25:46,338 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:25:46,338 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:25:46,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:25:46,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:46,756 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:46,756 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:25:47,368 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:47,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39169631] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:25:47,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1934690870] [2024-11-14 05:25:47,369 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:25:47,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:25:47,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:25:47,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587596288] [2024-11-14 05:25:47,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:25:47,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:25:47,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:25:47,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:25:47,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1357, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:25:47,371 INFO L87 Difference]: Start difference. First operand 9850 states and 28850 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:50,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:50,004 INFO L93 Difference]: Finished difference Result 11679 states and 33709 transitions. [2024-11-14 05:25:50,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-14 05:25:50,005 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:25:50,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:50,034 INFO L225 Difference]: With dead ends: 11679 [2024-11-14 05:25:50,034 INFO L226 Difference]: Without dead ends: 11595 [2024-11-14 05:25:50,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2332 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=912, Invalid=6744, Unknown=0, NotChecked=0, Total=7656 [2024-11-14 05:25:50,038 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 168 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 1700 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 1786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:50,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 19 Invalid, 1786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1700 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 05:25:50,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11595 states. [2024-11-14 05:25:50,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11595 to 9858. [2024-11-14 05:25:50,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9858 states, 9857 states have (on average 2.920766967637212) internal successors, (28790), 9857 states have internal predecessors, (28790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:50,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9858 states to 9858 states and 28790 transitions. [2024-11-14 05:25:50,213 INFO L78 Accepts]: Start accepts. Automaton has 9858 states and 28790 transitions. Word has length 24 [2024-11-14 05:25:50,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:50,213 INFO L471 AbstractCegarLoop]: Abstraction has 9858 states and 28790 transitions. [2024-11-14 05:25:50,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:50,213 INFO L276 IsEmpty]: Start isEmpty. Operand 9858 states and 28790 transitions. [2024-11-14 05:25:50,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:25:50,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:50,224 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:50,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2024-11-14 05:25:50,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,129 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:50,424 INFO L396 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:25:50,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:50,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1968424001, now seen corresponding path program 129 times [2024-11-14 05:25:50,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:50,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34586866] [2024-11-14 05:25:50,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:50,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:50,650 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:50,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:25:50,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34586866] [2024-11-14 05:25:50,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34586866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:25:50,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353262512] [2024-11-14 05:25:50,650 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:25:50,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:50,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:25:50,652 INFO L229 MonitoredProcess]: Starting monitored process 130 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:25:50,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2024-11-14 05:25:50,702 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:25:50,702 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:25:50,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 05:25:50,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:51,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:25:51,549 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:51,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353262512] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:25:51,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [720413462] [2024-11-14 05:25:51,550 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:25:51,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:25:51,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 39 [2024-11-14 05:25:51,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017773168] [2024-11-14 05:25:51,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:25:51,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:25:51,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:25:51,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:25:51,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1348, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:25:51,551 INFO L87 Difference]: Start difference. First operand 9858 states and 28790 transitions. Second operand has 40 states, 40 states have (on average 1.625) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:56,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:56,513 INFO L93 Difference]: Finished difference Result 12647 states and 36590 transitions. [2024-11-14 05:25:56,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-14 05:25:56,513 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.625) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:25:56,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:56,547 INFO L225 Difference]: With dead ends: 12647 [2024-11-14 05:25:56,547 INFO L226 Difference]: Without dead ends: 12621 [2024-11-14 05:25:56,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4222 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1635, Invalid=10797, Unknown=0, NotChecked=0, Total=12432 [2024-11-14 05:25:56,552 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 266 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 2646 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 2796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 2646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:56,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 45 Invalid, 2796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 2646 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-14 05:25:56,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12621 states. [2024-11-14 05:25:56,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12621 to 10566. [2024-11-14 05:25:56,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10566 states, 10565 states have (on average 2.930052058684335) internal successors, (30956), 10565 states have internal predecessors, (30956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10566 states to 10566 states and 30956 transitions. [2024-11-14 05:25:56,760 INFO L78 Accepts]: Start accepts. Automaton has 10566 states and 30956 transitions. Word has length 24 [2024-11-14 05:25:56,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:56,760 INFO L471 AbstractCegarLoop]: Abstraction has 10566 states and 30956 transitions. [2024-11-14 05:25:56,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.625) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:56,760 INFO L276 IsEmpty]: Start isEmpty. Operand 10566 states and 30956 transitions. [2024-11-14 05:25:56,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:25:56,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:56,774 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:56,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2024-11-14 05:25:56,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,130 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:56,975 INFO L396 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:25:56,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:56,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1433042249, now seen corresponding path program 130 times [2024-11-14 05:25:56,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:56,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376469198] [2024-11-14 05:25:56,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:56,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:57,231 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:57,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:25:57,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376469198] [2024-11-14 05:25:57,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376469198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:25:57,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826550034] [2024-11-14 05:25:57,231 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:25:57,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:57,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:25:57,233 INFO L229 MonitoredProcess]: Starting monitored process 131 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:25:57,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2024-11-14 05:25:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:57,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:25:57,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:57,739 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:57,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:25:58,531 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:58,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826550034] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:25:58,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [731223961] [2024-11-14 05:25:58,531 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:25:58,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:25:58,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:25:58,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117599935] [2024-11-14 05:25:58,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:25:58,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:25:58,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:25:58,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:25:58,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1315, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:25:58,533 INFO L87 Difference]: Start difference. First operand 10566 states and 30956 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:00,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:26:00,585 INFO L93 Difference]: Finished difference Result 11935 states and 34800 transitions. [2024-11-14 05:26:00,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-14 05:26:00,585 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:26:00,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:26:00,616 INFO L225 Difference]: With dead ends: 11935 [2024-11-14 05:26:00,616 INFO L226 Difference]: Without dead ends: 11919 [2024-11-14 05:26:00,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=674, Invalid=3748, Unknown=0, NotChecked=0, Total=4422 [2024-11-14 05:26:00,620 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 173 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:26:00,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 38 Invalid, 1729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1685 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 05:26:00,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11919 states. [2024-11-14 05:26:00,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11919 to 10532. [2024-11-14 05:26:00,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10532 states, 10531 states have (on average 2.9303010160478586) internal successors, (30859), 10531 states have internal predecessors, (30859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:00,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10532 states to 10532 states and 30859 transitions. [2024-11-14 05:26:00,803 INFO L78 Accepts]: Start accepts. Automaton has 10532 states and 30859 transitions. Word has length 24 [2024-11-14 05:26:00,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:26:00,804 INFO L471 AbstractCegarLoop]: Abstraction has 10532 states and 30859 transitions. [2024-11-14 05:26:00,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:00,804 INFO L276 IsEmpty]: Start isEmpty. Operand 10532 states and 30859 transitions. [2024-11-14 05:26:00,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:26:00,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:00,818 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:26:00,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2024-11-14 05:26:01,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,131 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:01,018 INFO L396 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:26:01,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:01,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1000115593, now seen corresponding path program 131 times [2024-11-14 05:26:01,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:26:01,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216147901] [2024-11-14 05:26:01,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:01,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:26:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:01,290 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:01,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:26:01,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216147901] [2024-11-14 05:26:01,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216147901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:26:01,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115351802] [2024-11-14 05:26:01,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:26:01,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:01,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:26:01,292 INFO L229 MonitoredProcess]: Starting monitored process 132 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:26:01,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2024-11-14 05:26:01,339 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 05:26:01,339 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:26:01,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:26:01,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:01,785 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:01,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:26:02,528 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:02,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115351802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:26:02,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1289041381] [2024-11-14 05:26:02,528 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:26:02,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:26:02,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:26:02,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449755430] [2024-11-14 05:26:02,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:26:02,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:26:02,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:26:02,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:26:02,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=1316, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:26:02,529 INFO L87 Difference]: Start difference. First operand 10532 states and 30859 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:05,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:26:05,844 INFO L93 Difference]: Finished difference Result 12687 states and 36758 transitions. [2024-11-14 05:26:05,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-14 05:26:05,845 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:26:05,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:26:05,876 INFO L225 Difference]: With dead ends: 12687 [2024-11-14 05:26:05,876 INFO L226 Difference]: Without dead ends: 12677 [2024-11-14 05:26:05,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2136 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1063, Invalid=6419, Unknown=0, NotChecked=0, Total=7482 [2024-11-14 05:26:05,881 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 244 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:26:05,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 32 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 05:26:05,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12677 states. [2024-11-14 05:26:06,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12677 to 10444. [2024-11-14 05:26:06,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10444 states, 10443 states have (on average 2.935076127549555) internal successors, (30651), 10443 states have internal predecessors, (30651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:06,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10444 states to 10444 states and 30651 transitions. [2024-11-14 05:26:06,070 INFO L78 Accepts]: Start accepts. Automaton has 10444 states and 30651 transitions. Word has length 24 [2024-11-14 05:26:06,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:26:06,070 INFO L471 AbstractCegarLoop]: Abstraction has 10444 states and 30651 transitions. [2024-11-14 05:26:06,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:06,070 INFO L276 IsEmpty]: Start isEmpty. Operand 10444 states and 30651 transitions. [2024-11-14 05:26:06,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:26:06,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:06,084 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:26:06,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2024-11-14 05:26:06,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,132 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:06,285 INFO L396 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:26:06,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:06,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1591968793, now seen corresponding path program 132 times [2024-11-14 05:26:06,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:26:06,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199136257] [2024-11-14 05:26:06,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:06,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:26:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:06,516 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:06,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:26:06,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199136257] [2024-11-14 05:26:06,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199136257] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:26:06,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103221391] [2024-11-14 05:26:06,516 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:26:06,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:06,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:26:06,518 INFO L229 MonitoredProcess]: Starting monitored process 133 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:26:06,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2024-11-14 05:26:06,578 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:26:06,578 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:26:06,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:26:06,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:07,067 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:07,067 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:26:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:07,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103221391] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:26:07,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2031507227] [2024-11-14 05:26:07,851 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:26:07,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:26:07,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:26:07,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088630260] [2024-11-14 05:26:07,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:26:07,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:26:07,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:26:07,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:26:07,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1356, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:26:07,852 INFO L87 Difference]: Start difference. First operand 10444 states and 30651 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:09,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:26:09,492 INFO L93 Difference]: Finished difference Result 12041 states and 34992 transitions. [2024-11-14 05:26:09,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-14 05:26:09,493 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:26:09,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:26:09,515 INFO L225 Difference]: With dead ends: 12041 [2024-11-14 05:26:09,516 INFO L226 Difference]: Without dead ends: 12031 [2024-11-14 05:26:09,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1014 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=539, Invalid=3621, Unknown=0, NotChecked=0, Total=4160 [2024-11-14 05:26:09,518 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 146 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:26:09,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 15 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 05:26:09,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12031 states. [2024-11-14 05:26:09,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12031 to 10448. [2024-11-14 05:26:09,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10448 states, 10447 states have (on average 2.9352924284483586) internal successors, (30665), 10447 states have internal predecessors, (30665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:09,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10448 states to 10448 states and 30665 transitions. [2024-11-14 05:26:09,680 INFO L78 Accepts]: Start accepts. Automaton has 10448 states and 30665 transitions. Word has length 24 [2024-11-14 05:26:09,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:26:09,680 INFO L471 AbstractCegarLoop]: Abstraction has 10448 states and 30665 transitions. [2024-11-14 05:26:09,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:09,681 INFO L276 IsEmpty]: Start isEmpty. Operand 10448 states and 30665 transitions. [2024-11-14 05:26:09,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:26:09,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:09,692 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:26:09,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2024-11-14 05:26:09,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2024-11-14 05:26:09,892 INFO L396 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:26:09,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:09,893 INFO L85 PathProgramCache]: Analyzing trace with hash -838853107, now seen corresponding path program 133 times [2024-11-14 05:26:09,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:26:09,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990818553] [2024-11-14 05:26:09,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:09,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:26:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:10,109 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:10,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:26:10,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990818553] [2024-11-14 05:26:10,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990818553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:26:10,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697176321] [2024-11-14 05:26:10,110 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:26:10,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:10,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:26:10,111 INFO L229 MonitoredProcess]: Starting monitored process 134 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:26:10,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2024-11-14 05:26:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:10,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:26:10,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:10,586 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:10,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:26:11,372 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:11,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697176321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:26:11,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1671014459] [2024-11-14 05:26:11,373 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:26:11,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:26:11,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:26:11,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360146560] [2024-11-14 05:26:11,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:26:11,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:26:11,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:26:11,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:26:11,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1356, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:26:11,374 INFO L87 Difference]: Start difference. First operand 10448 states and 30665 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:14,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:26:14,862 INFO L93 Difference]: Finished difference Result 12825 states and 37080 transitions. [2024-11-14 05:26:14,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-11-14 05:26:14,863 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:26:14,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:26:14,896 INFO L225 Difference]: With dead ends: 12825 [2024-11-14 05:26:14,896 INFO L226 Difference]: Without dead ends: 12811 [2024-11-14 05:26:14,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3016 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1059, Invalid=8841, Unknown=0, NotChecked=0, Total=9900 [2024-11-14 05:26:14,900 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 183 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 2008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:26:14,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 18 Invalid, 2008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 05:26:14,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12811 states. [2024-11-14 05:26:15,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12811 to 10542. [2024-11-14 05:26:15,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10542 states, 10541 states have (on average 2.941087183379186) internal successors, (31002), 10541 states have internal predecessors, (31002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:15,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10542 states to 10542 states and 31002 transitions. [2024-11-14 05:26:15,107 INFO L78 Accepts]: Start accepts. Automaton has 10542 states and 31002 transitions. Word has length 24 [2024-11-14 05:26:15,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:26:15,107 INFO L471 AbstractCegarLoop]: Abstraction has 10542 states and 31002 transitions. [2024-11-14 05:26:15,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:15,108 INFO L276 IsEmpty]: Start isEmpty. Operand 10542 states and 31002 transitions. [2024-11-14 05:26:15,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:26:15,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:15,122 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:26:15,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Ended with exit code 0 [2024-11-14 05:26:15,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2024-11-14 05:26:15,322 INFO L396 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:26:15,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:15,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1579983587, now seen corresponding path program 134 times [2024-11-14 05:26:15,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:26:15,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709281351] [2024-11-14 05:26:15,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:15,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:26:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:15,565 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:15,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:26:15,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709281351] [2024-11-14 05:26:15,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709281351] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:26:15,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017006599] [2024-11-14 05:26:15,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:26:15,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:15,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:26:15,567 INFO L229 MonitoredProcess]: Starting monitored process 135 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:26:15,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2024-11-14 05:26:15,617 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 05:26:15,617 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:26:15,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:26:15,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:16,058 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:16,058 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:26:16,798 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:16,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017006599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:26:16,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [304412798] [2024-11-14 05:26:16,799 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:26:16,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:26:16,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:26:16,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428966651] [2024-11-14 05:26:16,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:26:16,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:26:16,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:26:16,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:26:16,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1320, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:26:16,800 INFO L87 Difference]: Start difference. First operand 10542 states and 31002 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:21,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:26:21,629 INFO L93 Difference]: Finished difference Result 13512 states and 38889 transitions. [2024-11-14 05:26:21,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-11-14 05:26:21,630 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:26:21,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:26:21,660 INFO L225 Difference]: With dead ends: 13512 [2024-11-14 05:26:21,660 INFO L226 Difference]: Without dead ends: 13494 [2024-11-14 05:26:21,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4279 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1792, Invalid=11548, Unknown=0, NotChecked=0, Total=13340 [2024-11-14 05:26:21,664 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 242 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 2541 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 2674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:26:21,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 31 Invalid, 2674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2541 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-14 05:26:21,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13494 states. [2024-11-14 05:26:21,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13494 to 10456. [2024-11-14 05:26:21,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10456 states, 10455 states have (on average 2.9395504543280726) internal successors, (30733), 10455 states have internal predecessors, (30733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:21,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10456 states to 10456 states and 30733 transitions. [2024-11-14 05:26:21,864 INFO L78 Accepts]: Start accepts. Automaton has 10456 states and 30733 transitions. Word has length 24 [2024-11-14 05:26:21,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:26:21,864 INFO L471 AbstractCegarLoop]: Abstraction has 10456 states and 30733 transitions. [2024-11-14 05:26:21,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:21,864 INFO L276 IsEmpty]: Start isEmpty. Operand 10456 states and 30733 transitions. [2024-11-14 05:26:21,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:26:21,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:21,875 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:26:21,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Ended with exit code 0 [2024-11-14 05:26:22,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2024-11-14 05:26:22,076 INFO L396 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:26:22,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:22,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1441455437, now seen corresponding path program 135 times [2024-11-14 05:26:22,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:26:22,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551366200] [2024-11-14 05:26:22,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:22,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:26:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:22,322 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:22,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:26:22,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551366200] [2024-11-14 05:26:22,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551366200] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:26:22,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611560033] [2024-11-14 05:26:22,323 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:26:22,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:22,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:26:22,324 INFO L229 MonitoredProcess]: Starting monitored process 136 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:26:22,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2024-11-14 05:26:22,373 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:26:22,374 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:26:22,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:26:22,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:22,897 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:22,897 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:26:23,761 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:23,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611560033] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:26:23,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1872266713] [2024-11-14 05:26:23,762 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:26:23,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:26:23,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:26:23,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087845275] [2024-11-14 05:26:23,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:26:23,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:26:23,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:26:23,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:26:23,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1312, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:26:23,764 INFO L87 Difference]: Start difference. First operand 10456 states and 30733 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:27,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:26:27,916 INFO L93 Difference]: Finished difference Result 13424 states and 38659 transitions. [2024-11-14 05:26:27,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-14 05:26:27,916 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:26:27,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:26:27,949 INFO L225 Difference]: With dead ends: 13424 [2024-11-14 05:26:27,949 INFO L226 Difference]: Without dead ends: 13398 [2024-11-14 05:26:27,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3388 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1560, Invalid=9152, Unknown=0, NotChecked=0, Total=10712 [2024-11-14 05:26:27,954 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 348 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 2219 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 2370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 2219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:26:27,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 26 Invalid, 2370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 2219 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 05:26:27,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13398 states. [2024-11-14 05:26:28,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13398 to 10338. [2024-11-14 05:26:28,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10338 states, 10337 states have (on average 2.9366353874431654) internal successors, (30356), 10337 states have internal predecessors, (30356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:28,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10338 states to 10338 states and 30356 transitions. [2024-11-14 05:26:28,155 INFO L78 Accepts]: Start accepts. Automaton has 10338 states and 30356 transitions. Word has length 24 [2024-11-14 05:26:28,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:26:28,155 INFO L471 AbstractCegarLoop]: Abstraction has 10338 states and 30356 transitions. [2024-11-14 05:26:28,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:28,155 INFO L276 IsEmpty]: Start isEmpty. Operand 10338 states and 30356 transitions. [2024-11-14 05:26:28,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:26:28,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:28,168 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:26:28,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Ended with exit code 0 [2024-11-14 05:26:28,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2024-11-14 05:26:28,369 INFO L396 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:26:28,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:28,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1012100799, now seen corresponding path program 136 times [2024-11-14 05:26:28,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:26:28,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180574986] [2024-11-14 05:26:28,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:28,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:26:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:28,587 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:28,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:26:28,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180574986] [2024-11-14 05:26:28,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180574986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:26:28,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926491085] [2024-11-14 05:26:28,588 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:26:28,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:28,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:26:28,589 INFO L229 MonitoredProcess]: Starting monitored process 137 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:26:28,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2024-11-14 05:26:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:28,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:26:28,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:29,047 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:29,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:26:29,694 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:29,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926491085] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:26:29,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1023931106] [2024-11-14 05:26:29,694 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:26:29,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:26:29,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:26:29,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819109047] [2024-11-14 05:26:29,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:26:29,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:26:29,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:26:29,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:26:29,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1346, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:26:29,695 INFO L87 Difference]: Start difference. First operand 10338 states and 30356 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:32,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:26:32,906 INFO L93 Difference]: Finished difference Result 12601 states and 36408 transitions. [2024-11-14 05:26:32,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-14 05:26:32,906 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:26:32,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:26:32,941 INFO L225 Difference]: With dead ends: 12601 [2024-11-14 05:26:32,941 INFO L226 Difference]: Without dead ends: 12585 [2024-11-14 05:26:32,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2490 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=980, Invalid=7392, Unknown=0, NotChecked=0, Total=8372 [2024-11-14 05:26:32,946 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 166 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 2125 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 2219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:26:32,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 22 Invalid, 2219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2125 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 05:26:32,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12585 states. [2024-11-14 05:26:33,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12585 to 10310. [2024-11-14 05:26:33,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10310 states, 10309 states have (on average 2.9364632845086818) internal successors, (30272), 10309 states have internal predecessors, (30272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:33,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10310 states to 10310 states and 30272 transitions. [2024-11-14 05:26:33,147 INFO L78 Accepts]: Start accepts. Automaton has 10310 states and 30272 transitions. Word has length 24 [2024-11-14 05:26:33,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:26:33,147 INFO L471 AbstractCegarLoop]: Abstraction has 10310 states and 30272 transitions. [2024-11-14 05:26:33,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:33,147 INFO L276 IsEmpty]: Start isEmpty. Operand 10310 states and 30272 transitions. [2024-11-14 05:26:33,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:26:33,160 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:33,160 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:26:33,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Ended with exit code 0 [2024-11-14 05:26:33,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,137 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:33,361 INFO L396 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:26:33,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:33,361 INFO L85 PathProgramCache]: Analyzing trace with hash -300997529, now seen corresponding path program 137 times [2024-11-14 05:26:33,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:26:33,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361827456] [2024-11-14 05:26:33,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:33,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:26:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:33,578 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:33,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:26:33,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361827456] [2024-11-14 05:26:33,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361827456] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:26:33,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032995615] [2024-11-14 05:26:33,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:26:33,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:33,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:26:33,580 INFO L229 MonitoredProcess]: Starting monitored process 138 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:26:33,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2024-11-14 05:26:33,628 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:26:33,628 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:26:33,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:26:33,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:34,043 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:34,044 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:26:34,728 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:34,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032995615] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:26:34,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [67720324] [2024-11-14 05:26:34,729 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:26:34,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:26:34,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:26:34,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655824940] [2024-11-14 05:26:34,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:26:34,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:26:34,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:26:34,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:26:34,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1366, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:26:34,730 INFO L87 Difference]: Start difference. First operand 10310 states and 30272 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:36,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:26:36,687 INFO L93 Difference]: Finished difference Result 11859 states and 34443 transitions. [2024-11-14 05:26:36,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-14 05:26:36,688 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:26:36,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:26:36,717 INFO L225 Difference]: With dead ends: 11859 [2024-11-14 05:26:36,717 INFO L226 Difference]: Without dead ends: 11817 [2024-11-14 05:26:36,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=538, Invalid=4292, Unknown=0, NotChecked=0, Total=4830 [2024-11-14 05:26:36,721 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 124 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1689 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:26:36,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 23 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1689 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 05:26:36,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11817 states. [2024-11-14 05:26:36,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11817 to 10310. [2024-11-14 05:26:36,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10310 states, 10309 states have (on average 2.935299253079833) internal successors, (30260), 10309 states have internal predecessors, (30260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:36,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10310 states to 10310 states and 30260 transitions. [2024-11-14 05:26:36,906 INFO L78 Accepts]: Start accepts. Automaton has 10310 states and 30260 transitions. Word has length 24 [2024-11-14 05:26:36,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:26:36,907 INFO L471 AbstractCegarLoop]: Abstraction has 10310 states and 30260 transitions. [2024-11-14 05:26:36,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:36,907 INFO L276 IsEmpty]: Start isEmpty. Operand 10310 states and 30260 transitions. [2024-11-14 05:26:36,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:26:36,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:36,919 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:26:36,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Ended with exit code 0 [2024-11-14 05:26:37,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,138 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:37,120 INFO L396 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:26:37,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:37,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1939694063, now seen corresponding path program 138 times [2024-11-14 05:26:37,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:26:37,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314898523] [2024-11-14 05:26:37,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:37,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:26:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:37,325 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:37,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:26:37,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314898523] [2024-11-14 05:26:37,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314898523] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:26:37,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576308057] [2024-11-14 05:26:37,325 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:26:37,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:37,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:26:37,327 INFO L229 MonitoredProcess]: Starting monitored process 139 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:26:37,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2024-11-14 05:26:37,376 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:26:37,376 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:26:37,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:26:37,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:37,787 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:37,787 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:26:38,405 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:38,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576308057] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:26:38,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1238132751] [2024-11-14 05:26:38,406 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:26:38,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:26:38,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 38 [2024-11-14 05:26:38,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364137607] [2024-11-14 05:26:38,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:26:38,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-14 05:26:38,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:26:38,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-14 05:26:38,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1287, Unknown=0, NotChecked=0, Total=1482 [2024-11-14 05:26:38,407 INFO L87 Difference]: Start difference. First operand 10310 states and 30260 transitions. Second operand has 39 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 38 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:43,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:26:43,071 INFO L93 Difference]: Finished difference Result 12901 states and 37132 transitions. [2024-11-14 05:26:43,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2024-11-14 05:26:43,071 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 38 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:26:43,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:26:43,105 INFO L225 Difference]: With dead ends: 12901 [2024-11-14 05:26:43,106 INFO L226 Difference]: Without dead ends: 12887 [2024-11-14 05:26:43,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5717 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1815, Invalid=14441, Unknown=0, NotChecked=0, Total=16256 [2024-11-14 05:26:43,110 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 273 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 2335 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 2445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:26:43,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 14 Invalid, 2445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2335 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-14 05:26:43,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12887 states. [2024-11-14 05:26:43,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12887 to 10388. [2024-11-14 05:26:43,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10388 states, 10387 states have (on average 2.939347260999326) internal successors, (30531), 10387 states have internal predecessors, (30531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:43,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10388 states to 10388 states and 30531 transitions. [2024-11-14 05:26:43,305 INFO L78 Accepts]: Start accepts. Automaton has 10388 states and 30531 transitions. Word has length 24 [2024-11-14 05:26:43,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:26:43,305 INFO L471 AbstractCegarLoop]: Abstraction has 10388 states and 30531 transitions. [2024-11-14 05:26:43,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 38 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:43,305 INFO L276 IsEmpty]: Start isEmpty. Operand 10388 states and 30531 transitions. [2024-11-14 05:26:43,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:26:43,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:43,318 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:26:43,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Ended with exit code 0 [2024-11-14 05:26:43,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,139 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:43,519 INFO L396 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:26:43,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:43,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1817417655, now seen corresponding path program 139 times [2024-11-14 05:26:43,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:26:43,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930004295] [2024-11-14 05:26:43,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:43,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:26:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:43,733 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:43,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:26:43,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930004295] [2024-11-14 05:26:43,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930004295] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:26:43,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093317305] [2024-11-14 05:26:43,733 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:26:43,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:43,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:26:43,735 INFO L229 MonitoredProcess]: Starting monitored process 140 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:26:43,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2024-11-14 05:26:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:43,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:26:43,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:44,183 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:44,183 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:26:44,810 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:44,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093317305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:26:44,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2028031054] [2024-11-14 05:26:44,810 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:26:44,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:26:44,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:26:44,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341778011] [2024-11-14 05:26:44,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:26:44,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:26:44,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:26:44,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:26:44,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1363, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:26:44,811 INFO L87 Difference]: Start difference. First operand 10388 states and 30531 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:48,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:26:48,494 INFO L93 Difference]: Finished difference Result 12433 states and 35964 transitions. [2024-11-14 05:26:48,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-14 05:26:48,494 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:26:48,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:26:48,527 INFO L225 Difference]: With dead ends: 12433 [2024-11-14 05:26:48,527 INFO L226 Difference]: Without dead ends: 12327 [2024-11-14 05:26:48,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3544 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1216, Invalid=9704, Unknown=0, NotChecked=0, Total=10920 [2024-11-14 05:26:48,532 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 186 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 2539 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 2629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:26:48,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 21 Invalid, 2629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 2539 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-14 05:26:48,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12327 states. [2024-11-14 05:26:48,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12327 to 10388. [2024-11-14 05:26:48,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10388 states, 10387 states have (on average 2.93049003562145) internal successors, (30439), 10387 states have internal predecessors, (30439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:48,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10388 states to 10388 states and 30439 transitions. [2024-11-14 05:26:48,724 INFO L78 Accepts]: Start accepts. Automaton has 10388 states and 30439 transitions. Word has length 24 [2024-11-14 05:26:48,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:26:48,725 INFO L471 AbstractCegarLoop]: Abstraction has 10388 states and 30439 transitions. [2024-11-14 05:26:48,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:48,725 INFO L276 IsEmpty]: Start isEmpty. Operand 10388 states and 30439 transitions. [2024-11-14 05:26:48,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:26:48,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:48,737 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:26:48,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Forceful destruction successful, exit code 0 [2024-11-14 05:26:48,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,140 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:48,938 INFO L396 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:26:48,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:48,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1668675171, now seen corresponding path program 140 times [2024-11-14 05:26:48,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:26:48,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337993581] [2024-11-14 05:26:48,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:48,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:26:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:49,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:26:49,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337993581] [2024-11-14 05:26:49,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337993581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:26:49,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801225156] [2024-11-14 05:26:49,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:26:49,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:49,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:26:49,165 INFO L229 MonitoredProcess]: Starting monitored process 141 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:26:49,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2024-11-14 05:26:49,215 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 05:26:49,216 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:26:49,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:26:49,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:49,727 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:49,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:26:50,493 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:50,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801225156] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:26:50,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [924456149] [2024-11-14 05:26:50,493 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:26:50,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:26:50,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:26:50,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968382369] [2024-11-14 05:26:50,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:26:50,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:26:50,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:26:50,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:26:50,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1372, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:26:50,494 INFO L87 Difference]: Start difference. First operand 10388 states and 30439 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:54,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:26:54,721 INFO L93 Difference]: Finished difference Result 12163 states and 35270 transitions. [2024-11-14 05:26:54,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-14 05:26:54,721 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:26:54,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:26:54,752 INFO L225 Difference]: With dead ends: 12163 [2024-11-14 05:26:54,752 INFO L226 Difference]: Without dead ends: 12149 [2024-11-14 05:26:54,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3887 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1168, Invalid=10822, Unknown=0, NotChecked=0, Total=11990 [2024-11-14 05:26:54,757 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 221 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 2453 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 2540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:26:54,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 18 Invalid, 2540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2453 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 05:26:54,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12149 states. [2024-11-14 05:26:54,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12149 to 10438. [2024-11-14 05:26:54,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10438 states, 10437 states have (on average 2.932451853981029) internal successors, (30606), 10437 states have internal predecessors, (30606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:54,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10438 states to 10438 states and 30606 transitions. [2024-11-14 05:26:54,961 INFO L78 Accepts]: Start accepts. Automaton has 10438 states and 30606 transitions. Word has length 24 [2024-11-14 05:26:54,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:26:54,961 INFO L471 AbstractCegarLoop]: Abstraction has 10438 states and 30606 transitions. [2024-11-14 05:26:54,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:26:54,961 INFO L276 IsEmpty]: Start isEmpty. Operand 10438 states and 30606 transitions. [2024-11-14 05:26:54,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:26:54,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:26:54,975 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:26:54,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Ended with exit code 0 [2024-11-14 05:26:55,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,141 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:55,176 INFO L396 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:26:55,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:26:55,176 INFO L85 PathProgramCache]: Analyzing trace with hash -207455431, now seen corresponding path program 141 times [2024-11-14 05:26:55,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:26:55,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224814514] [2024-11-14 05:26:55,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:26:55,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:26:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:26:55,455 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:55,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:26:55,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224814514] [2024-11-14 05:26:55,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224814514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:26:55,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356518000] [2024-11-14 05:26:55,455 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:26:55,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:26:55,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:26:55,457 INFO L229 MonitoredProcess]: Starting monitored process 142 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:26:55,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2024-11-14 05:26:55,505 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:26:55,505 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:26:55,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 05:26:55,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:26:55,946 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:55,947 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:26:56,583 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:26:56,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356518000] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:26:56,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [460817115] [2024-11-14 05:26:56,584 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:26:56,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:26:56,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 15] total 40 [2024-11-14 05:26:56,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353699553] [2024-11-14 05:26:56,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:26:56,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-14 05:26:56,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:26:56,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-14 05:26:56,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1420, Unknown=0, NotChecked=0, Total=1640 [2024-11-14 05:26:56,585 INFO L87 Difference]: Start difference. First operand 10438 states and 30606 transitions. Second operand has 41 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:03,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:03,891 INFO L93 Difference]: Finished difference Result 12572 states and 36353 transitions. [2024-11-14 05:27:03,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2024-11-14 05:27:03,891 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:27:03,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:03,926 INFO L225 Difference]: With dead ends: 12572 [2024-11-14 05:27:03,926 INFO L226 Difference]: Without dead ends: 12558 [2024-11-14 05:27:03,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8474 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=2589, Invalid=21281, Unknown=0, NotChecked=0, Total=23870 [2024-11-14 05:27:03,931 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 395 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 2774 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 2986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 2774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:03,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 31 Invalid, 2986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 2774 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-14 05:27:03,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12558 states. [2024-11-14 05:27:04,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12558 to 10534. [2024-11-14 05:27:04,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10534 states, 10533 states have (on average 2.9361055729611696) internal successors, (30926), 10533 states have internal predecessors, (30926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:04,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10534 states to 10534 states and 30926 transitions. [2024-11-14 05:27:04,239 INFO L78 Accepts]: Start accepts. Automaton has 10534 states and 30926 transitions. Word has length 24 [2024-11-14 05:27:04,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:27:04,240 INFO L471 AbstractCegarLoop]: Abstraction has 10534 states and 30926 transitions. [2024-11-14 05:27:04,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:04,240 INFO L276 IsEmpty]: Start isEmpty. Operand 10534 states and 30926 transitions. [2024-11-14 05:27:04,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:27:04,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:04,252 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:27:04,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Ended with exit code 0 [2024-11-14 05:27:04,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable142 [2024-11-14 05:27:04,453 INFO L396 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:27:04,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:04,453 INFO L85 PathProgramCache]: Analyzing trace with hash -345983581, now seen corresponding path program 142 times [2024-11-14 05:27:04,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:04,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436803952] [2024-11-14 05:27:04,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:04,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:04,706 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:04,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:04,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436803952] [2024-11-14 05:27:04,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436803952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:27:04,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552597597] [2024-11-14 05:27:04,707 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:27:04,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:27:04,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:27:04,709 INFO L229 MonitoredProcess]: Starting monitored process 143 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:27:04,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2024-11-14 05:27:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:04,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:27:04,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:27:05,214 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:05,214 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:27:06,018 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:06,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552597597] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:27:06,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1130587217] [2024-11-14 05:27:06,019 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:27:06,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:27:06,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:27:06,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526930114] [2024-11-14 05:27:06,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:27:06,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:27:06,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:27:06,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:27:06,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1340, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:27:06,020 INFO L87 Difference]: Start difference. First operand 10534 states and 30926 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:12,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:12,521 INFO L93 Difference]: Finished difference Result 12686 states and 36704 transitions. [2024-11-14 05:27:12,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2024-11-14 05:27:12,522 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:27:12,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:12,559 INFO L225 Difference]: With dead ends: 12686 [2024-11-14 05:27:12,559 INFO L226 Difference]: Without dead ends: 12673 [2024-11-14 05:27:12,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6264 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2145, Invalid=15411, Unknown=0, NotChecked=0, Total=17556 [2024-11-14 05:27:12,564 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 416 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 3118 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 3288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 3118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:12,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 42 Invalid, 3288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 3118 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-14 05:27:12,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12673 states. [2024-11-14 05:27:12,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12673 to 10535. [2024-11-14 05:27:12,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10535 states, 10534 states have (on average 2.9348775393962407) internal successors, (30916), 10534 states have internal predecessors, (30916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:12,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10535 states to 10535 states and 30916 transitions. [2024-11-14 05:27:12,782 INFO L78 Accepts]: Start accepts. Automaton has 10535 states and 30916 transitions. Word has length 24 [2024-11-14 05:27:12,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:27:12,782 INFO L471 AbstractCegarLoop]: Abstraction has 10535 states and 30916 transitions. [2024-11-14 05:27:12,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:12,782 INFO L276 IsEmpty]: Start isEmpty. Operand 10535 states and 30916 transitions. [2024-11-14 05:27:12,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:27:12,796 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:12,796 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:27:12,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Ended with exit code 0 [2024-11-14 05:27:12,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,143 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:27:12,996 INFO L396 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:27:12,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:12,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1495427479, now seen corresponding path program 143 times [2024-11-14 05:27:12,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:12,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671635587] [2024-11-14 05:27:12,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:12,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:13,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:13,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671635587] [2024-11-14 05:27:13,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671635587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:27:13,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850756279] [2024-11-14 05:27:13,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:27:13,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:27:13,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:27:13,264 INFO L229 MonitoredProcess]: Starting monitored process 144 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:27:13,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2024-11-14 05:27:13,322 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 05:27:13,322 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:27:13,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:27:13,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:27:13,828 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:13,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:27:14,610 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:14,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850756279] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:27:14,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1554889671] [2024-11-14 05:27:14,610 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:27:14,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:27:14,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:27:14,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344749488] [2024-11-14 05:27:14,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:27:14,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:27:14,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:27:14,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:27:14,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1365, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:27:14,611 INFO L87 Difference]: Start difference. First operand 10535 states and 30916 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:18,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:18,747 INFO L93 Difference]: Finished difference Result 12154 states and 35275 transitions. [2024-11-14 05:27:18,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-14 05:27:18,747 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:27:18,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:18,783 INFO L225 Difference]: With dead ends: 12154 [2024-11-14 05:27:18,783 INFO L226 Difference]: Without dead ends: 12144 [2024-11-14 05:27:18,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3038 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1044, Invalid=8658, Unknown=0, NotChecked=0, Total=9702 [2024-11-14 05:27:18,788 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 229 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 2251 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:18,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 17 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2251 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-14 05:27:18,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12144 states. [2024-11-14 05:27:18,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12144 to 10541. [2024-11-14 05:27:18,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10541 states, 10540 states have (on average 2.934629981024668) internal successors, (30931), 10540 states have internal predecessors, (30931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:18,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10541 states to 10541 states and 30931 transitions. [2024-11-14 05:27:19,006 INFO L78 Accepts]: Start accepts. Automaton has 10541 states and 30931 transitions. Word has length 24 [2024-11-14 05:27:19,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:27:19,006 INFO L471 AbstractCegarLoop]: Abstraction has 10541 states and 30931 transitions. [2024-11-14 05:27:19,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:19,007 INFO L276 IsEmpty]: Start isEmpty. Operand 10541 states and 30931 transitions. [2024-11-14 05:27:19,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:27:19,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:19,022 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:27:19,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Ended with exit code 0 [2024-11-14 05:27:19,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2024-11-14 05:27:19,222 INFO L396 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:27:19,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:19,223 INFO L85 PathProgramCache]: Analyzing trace with hash -438108949, now seen corresponding path program 144 times [2024-11-14 05:27:19,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:19,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817951462] [2024-11-14 05:27:19,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:19,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:19,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:19,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817951462] [2024-11-14 05:27:19,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817951462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:27:19,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543996438] [2024-11-14 05:27:19,543 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:27:19,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:27:19,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:27:19,546 INFO L229 MonitoredProcess]: Starting monitored process 145 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:27:19,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2024-11-14 05:27:19,615 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:27:19,615 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:27:19,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 05:27:19,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:27:20,145 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:20,145 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:27:20,836 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:20,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543996438] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:27:20,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [267606745] [2024-11-14 05:27:20,836 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:27:20,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:27:20,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 15] total 40 [2024-11-14 05:27:20,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285644487] [2024-11-14 05:27:20,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:27:20,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-14 05:27:20,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:27:20,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-14 05:27:20,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1448, Unknown=0, NotChecked=0, Total=1640 [2024-11-14 05:27:20,838 INFO L87 Difference]: Start difference. First operand 10541 states and 30931 transitions. Second operand has 41 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:27,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:27,540 INFO L93 Difference]: Finished difference Result 13324 states and 38390 transitions. [2024-11-14 05:27:27,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-11-14 05:27:27,541 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:27:27,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:27,579 INFO L225 Difference]: With dead ends: 13324 [2024-11-14 05:27:27,580 INFO L226 Difference]: Without dead ends: 13310 [2024-11-14 05:27:27,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7326 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1934, Invalid=18946, Unknown=0, NotChecked=0, Total=20880 [2024-11-14 05:27:27,586 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 249 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 2913 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 3037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:27,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 33 Invalid, 3037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 2913 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-14 05:27:27,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13310 states. [2024-11-14 05:27:27,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13310 to 10659. [2024-11-14 05:27:27,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10659 states, 10658 states have (on average 2.940514167761306) internal successors, (31340), 10658 states have internal predecessors, (31340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:27,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10659 states to 10659 states and 31340 transitions. [2024-11-14 05:27:27,806 INFO L78 Accepts]: Start accepts. Automaton has 10659 states and 31340 transitions. Word has length 24 [2024-11-14 05:27:27,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:27:27,806 INFO L471 AbstractCegarLoop]: Abstraction has 10659 states and 31340 transitions. [2024-11-14 05:27:27,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:27,807 INFO L276 IsEmpty]: Start isEmpty. Operand 10659 states and 31340 transitions. [2024-11-14 05:27:27,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:27:27,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:27,820 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:27:27,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Ended with exit code 0 [2024-11-14 05:27:28,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2024-11-14 05:27:28,020 INFO L396 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:27:28,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:28,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1980727745, now seen corresponding path program 145 times [2024-11-14 05:27:28,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:28,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241697994] [2024-11-14 05:27:28,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:28,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:28,321 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:28,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:28,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241697994] [2024-11-14 05:27:28,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241697994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:27:28,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494493029] [2024-11-14 05:27:28,321 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:27:28,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:27:28,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:27:28,323 INFO L229 MonitoredProcess]: Starting monitored process 146 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:27:28,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2024-11-14 05:27:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:28,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:27:28,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:27:28,832 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:28,832 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:27:29,697 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:29,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494493029] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:27:29,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1313302667] [2024-11-14 05:27:29,697 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:27:29,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:27:29,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:27:29,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954577152] [2024-11-14 05:27:29,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:27:29,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:27:29,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:27:29,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:27:29,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1353, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:27:29,699 INFO L87 Difference]: Start difference. First operand 10659 states and 31340 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:37,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:37,411 INFO L93 Difference]: Finished difference Result 13958 states and 40148 transitions. [2024-11-14 05:27:37,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2024-11-14 05:27:37,412 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:27:37,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:37,446 INFO L225 Difference]: With dead ends: 13958 [2024-11-14 05:27:37,446 INFO L226 Difference]: Without dead ends: 13940 [2024-11-14 05:27:37,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7906 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=2594, Invalid=19458, Unknown=0, NotChecked=0, Total=22052 [2024-11-14 05:27:37,451 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 374 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 3286 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 3480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 3286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:37,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 27 Invalid, 3480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 3286 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-14 05:27:37,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13940 states. [2024-11-14 05:27:37,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13940 to 10695. [2024-11-14 05:27:37,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10695 states, 10694 states have (on average 2.9412754815784554) internal successors, (31454), 10694 states have internal predecessors, (31454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:37,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10695 states to 10695 states and 31454 transitions. [2024-11-14 05:27:37,669 INFO L78 Accepts]: Start accepts. Automaton has 10695 states and 31454 transitions. Word has length 24 [2024-11-14 05:27:37,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:27:37,670 INFO L471 AbstractCegarLoop]: Abstraction has 10695 states and 31454 transitions. [2024-11-14 05:27:37,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:37,670 INFO L276 IsEmpty]: Start isEmpty. Operand 10695 states and 31454 transitions. [2024-11-14 05:27:37,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:27:37,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:37,684 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:27:37,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Forceful destruction successful, exit code 0 [2024-11-14 05:27:37,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 146 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2024-11-14 05:27:37,884 INFO L396 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:27:37,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:37,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1842199595, now seen corresponding path program 146 times [2024-11-14 05:27:37,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:37,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846962442] [2024-11-14 05:27:37,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:37,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:38,162 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:38,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:38,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846962442] [2024-11-14 05:27:38,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846962442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:27:38,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009496773] [2024-11-14 05:27:38,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:27:38,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:27:38,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:27:38,165 INFO L229 MonitoredProcess]: Starting monitored process 147 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:27:38,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2024-11-14 05:27:38,223 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 05:27:38,223 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:27:38,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:27:38,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:27:38,702 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:38,702 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:27:39,463 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:39,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009496773] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:27:39,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1340400391] [2024-11-14 05:27:39,464 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:27:39,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:27:39,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:27:39,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674804098] [2024-11-14 05:27:39,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:27:39,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:27:39,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:27:39,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:27:39,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1348, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:27:39,465 INFO L87 Difference]: Start difference. First operand 10695 states and 31454 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:46,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:46,729 INFO L93 Difference]: Finished difference Result 13829 states and 39818 transitions. [2024-11-14 05:27:46,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-11-14 05:27:46,729 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:27:46,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:46,765 INFO L225 Difference]: With dead ends: 13829 [2024-11-14 05:27:46,765 INFO L226 Difference]: Without dead ends: 13793 [2024-11-14 05:27:46,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7010 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=2437, Invalid=17023, Unknown=0, NotChecked=0, Total=19460 [2024-11-14 05:27:46,770 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 408 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 3467 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 3649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 3467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:46,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 48 Invalid, 3649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 3467 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-14 05:27:46,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13793 states. [2024-11-14 05:27:46,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13793 to 10667. [2024-11-14 05:27:46,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10667 states, 10666 states have (on average 2.940183761485093) internal successors, (31360), 10666 states have internal predecessors, (31360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:46,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10667 states to 10667 states and 31360 transitions. [2024-11-14 05:27:46,978 INFO L78 Accepts]: Start accepts. Automaton has 10667 states and 31360 transitions. Word has length 24 [2024-11-14 05:27:46,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:27:46,979 INFO L471 AbstractCegarLoop]: Abstraction has 10667 states and 31360 transitions. [2024-11-14 05:27:46,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:46,979 INFO L276 IsEmpty]: Start isEmpty. Operand 10667 states and 31360 transitions. [2024-11-14 05:27:46,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:27:46,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:46,992 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:27:47,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Ended with exit code 0 [2024-11-14 05:27:47,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2024-11-14 05:27:47,193 INFO L396 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:27:47,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:47,193 INFO L85 PathProgramCache]: Analyzing trace with hash -611356641, now seen corresponding path program 147 times [2024-11-14 05:27:47,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:47,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085641199] [2024-11-14 05:27:47,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:47,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:47,530 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:47,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:47,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085641199] [2024-11-14 05:27:47,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085641199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:27:47,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993761886] [2024-11-14 05:27:47,531 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:27:47,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:27:47,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:27:47,533 INFO L229 MonitoredProcess]: Starting monitored process 148 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:27:47,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2024-11-14 05:27:47,590 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:27:47,590 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:27:47,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 05:27:47,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:27:48,044 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:48,044 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:27:48,713 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:48,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993761886] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:27:48,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [962980656] [2024-11-14 05:27:48,714 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:27:48,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:27:48,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 15] total 40 [2024-11-14 05:27:48,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705144726] [2024-11-14 05:27:48,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:27:48,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-14 05:27:48,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:27:48,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-14 05:27:48,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1443, Unknown=0, NotChecked=0, Total=1640 [2024-11-14 05:27:48,715 INFO L87 Difference]: Start difference. First operand 10667 states and 31360 transitions. Second operand has 41 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:54,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:54,264 INFO L93 Difference]: Finished difference Result 13258 states and 38269 transitions. [2024-11-14 05:27:54,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2024-11-14 05:27:54,264 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:27:54,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:54,302 INFO L225 Difference]: With dead ends: 13258 [2024-11-14 05:27:54,302 INFO L226 Difference]: Without dead ends: 13242 [2024-11-14 05:27:54,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6919 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1928, Invalid=17812, Unknown=0, NotChecked=0, Total=19740 [2024-11-14 05:27:54,307 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 253 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 3085 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 3226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 3085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:54,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 37 Invalid, 3226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 3085 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-14 05:27:54,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13242 states. [2024-11-14 05:27:54,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13242 to 10593. [2024-11-14 05:27:54,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10593 states, 10592 states have (on average 2.9385385196374623) internal successors, (31125), 10592 states have internal predecessors, (31125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:54,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10593 states to 10593 states and 31125 transitions. [2024-11-14 05:27:54,543 INFO L78 Accepts]: Start accepts. Automaton has 10593 states and 31125 transitions. Word has length 24 [2024-11-14 05:27:54,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:27:54,543 INFO L471 AbstractCegarLoop]: Abstraction has 10593 states and 31125 transitions. [2024-11-14 05:27:54,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:54,544 INFO L276 IsEmpty]: Start isEmpty. Operand 10593 states and 31125 transitions. [2024-11-14 05:27:54,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:27:54,557 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:54,558 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:27:54,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Forceful destruction successful, exit code 0 [2024-11-14 05:27:54,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2024-11-14 05:27:54,758 INFO L396 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:27:54,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:54,758 INFO L85 PathProgramCache]: Analyzing trace with hash 99746629, now seen corresponding path program 148 times [2024-11-14 05:27:54,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:54,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395672458] [2024-11-14 05:27:54,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:54,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:55,042 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:55,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:55,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395672458] [2024-11-14 05:27:55,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395672458] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:27:55,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765715983] [2024-11-14 05:27:55,043 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:27:55,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:27:55,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:27:55,044 INFO L229 MonitoredProcess]: Starting monitored process 149 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:27:55,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2024-11-14 05:27:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:55,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:27:55,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:27:55,542 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:55,542 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:27:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:56,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765715983] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:27:56,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [388509437] [2024-11-14 05:27:56,297 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:27:56,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:27:56,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:27:56,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159275984] [2024-11-14 05:27:56,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:27:56,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:27:56,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:27:56,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:27:56,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1376, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:27:56,298 INFO L87 Difference]: Start difference. First operand 10593 states and 31125 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:59,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:59,783 INFO L93 Difference]: Finished difference Result 12182 states and 35431 transitions. [2024-11-14 05:27:59,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-14 05:27:59,784 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:27:59,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:59,817 INFO L225 Difference]: With dead ends: 12182 [2024-11-14 05:27:59,817 INFO L226 Difference]: Without dead ends: 12140 [2024-11-14 05:27:59,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2635 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=912, Invalid=7830, Unknown=0, NotChecked=0, Total=8742 [2024-11-14 05:27:59,822 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 182 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 2281 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 2356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:59,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 22 Invalid, 2356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2281 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-14 05:27:59,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12140 states. [2024-11-14 05:27:59,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12140 to 10595. [2024-11-14 05:27:59,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10595 states, 10594 states have (on average 2.937323013026241) internal successors, (31118), 10594 states have internal predecessors, (31118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:28:00,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10595 states to 10595 states and 31118 transitions. [2024-11-14 05:28:00,024 INFO L78 Accepts]: Start accepts. Automaton has 10595 states and 31118 transitions. Word has length 24 [2024-11-14 05:28:00,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:28:00,024 INFO L471 AbstractCegarLoop]: Abstraction has 10595 states and 31118 transitions. [2024-11-14 05:28:00,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:28:00,025 INFO L276 IsEmpty]: Start isEmpty. Operand 10595 states and 31118 transitions. [2024-11-14 05:28:00,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:28:00,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:28:00,038 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:28:00,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Ended with exit code 0 [2024-11-14 05:28:00,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2024-11-14 05:28:00,238 INFO L396 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:28:00,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:28:00,239 INFO L85 PathProgramCache]: Analyzing trace with hash -2065342207, now seen corresponding path program 149 times [2024-11-14 05:28:00,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:28:00,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896772603] [2024-11-14 05:28:00,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:28:00,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:28:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:00,506 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:28:00,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:28:00,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896772603] [2024-11-14 05:28:00,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896772603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:28:00,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146637740] [2024-11-14 05:28:00,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:28:00,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:28:00,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:28:00,509 INFO L229 MonitoredProcess]: Starting monitored process 150 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:28:00,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2024-11-14 05:28:00,557 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 05:28:00,557 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:28:00,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:28:00,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:28:00,962 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:28:00,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:28:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:28:01,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146637740] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:28:01,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [732786654] [2024-11-14 05:28:01,615 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:28:01,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:28:01,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:28:01,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308746724] [2024-11-14 05:28:01,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:28:01,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:28:01,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:28:01,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:28:01,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1351, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:28:01,616 INFO L87 Difference]: Start difference. First operand 10595 states and 31118 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:28:05,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:28:05,500 INFO L93 Difference]: Finished difference Result 12335 states and 35808 transitions. [2024-11-14 05:28:05,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-14 05:28:05,500 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:28:05,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:28:05,529 INFO L225 Difference]: With dead ends: 12335 [2024-11-14 05:28:05,530 INFO L226 Difference]: Without dead ends: 12325 [2024-11-14 05:28:05,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3768 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1321, Invalid=10235, Unknown=0, NotChecked=0, Total=11556 [2024-11-14 05:28:05,534 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 301 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 3276 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 3426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 3276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:28:05,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 20 Invalid, 3426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 3276 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-14 05:28:05,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12325 states. [2024-11-14 05:28:05,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12325 to 10639. [2024-11-14 05:28:05,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10639 states, 10638 states have (on average 2.9379582628313594) internal successors, (31254), 10638 states have internal predecessors, (31254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:28:05,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10639 states to 10639 states and 31254 transitions. [2024-11-14 05:28:05,790 INFO L78 Accepts]: Start accepts. Automaton has 10639 states and 31254 transitions. Word has length 24 [2024-11-14 05:28:05,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:28:05,790 INFO L471 AbstractCegarLoop]: Abstraction has 10639 states and 31254 transitions. [2024-11-14 05:28:05,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:28:05,790 INFO L276 IsEmpty]: Start isEmpty. Operand 10639 states and 31254 transitions. [2024-11-14 05:28:05,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:28:05,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:28:05,802 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:28:05,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Ended with exit code 0 [2024-11-14 05:28:06,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable150 [2024-11-14 05:28:06,003 INFO L396 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:28:06,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:28:06,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1832771487, now seen corresponding path program 150 times [2024-11-14 05:28:06,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:28:06,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042251401] [2024-11-14 05:28:06,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:28:06,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:28:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:28:06,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:28:06,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042251401] [2024-11-14 05:28:06,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042251401] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:28:06,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559563916] [2024-11-14 05:28:06,240 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:28:06,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:28:06,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:28:06,241 INFO L229 MonitoredProcess]: Starting monitored process 151 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:28:06,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2024-11-14 05:28:06,287 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:28:06,287 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:28:06,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 05:28:06,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:28:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:28:06,721 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:28:07,307 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:28:07,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559563916] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:28:07,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [883892005] [2024-11-14 05:28:07,308 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:28:07,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:28:07,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 15] total 40 [2024-11-14 05:28:07,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834585200] [2024-11-14 05:28:07,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:28:07,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-14 05:28:07,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:28:07,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-14 05:28:07,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1407, Unknown=0, NotChecked=0, Total=1640 [2024-11-14 05:28:07,309 INFO L87 Difference]: Start difference. First operand 10639 states and 31254 transitions. Second operand has 41 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:28:11,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:28:11,926 INFO L93 Difference]: Finished difference Result 12687 states and 36748 transitions. [2024-11-14 05:28:11,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-11-14 05:28:11,926 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:28:11,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:28:11,952 INFO L225 Difference]: With dead ends: 12687 [2024-11-14 05:28:11,952 INFO L226 Difference]: Without dead ends: 12677 [2024-11-14 05:28:11,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5098 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1709, Invalid=13543, Unknown=0, NotChecked=0, Total=15252 [2024-11-14 05:28:11,955 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 349 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 2907 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 3055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 2907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:28:11,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 51 Invalid, 3055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 2907 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 05:28:11,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12677 states. [2024-11-14 05:28:12,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12677 to 10639. [2024-11-14 05:28:12,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10639 states, 10638 states have (on average 2.93899229178417) internal successors, (31265), 10638 states have internal predecessors, (31265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:28:12,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10639 states to 10639 states and 31265 transitions. [2024-11-14 05:28:12,132 INFO L78 Accepts]: Start accepts. Automaton has 10639 states and 31265 transitions. Word has length 24 [2024-11-14 05:28:12,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:28:12,132 INFO L471 AbstractCegarLoop]: Abstraction has 10639 states and 31265 transitions. [2024-11-14 05:28:12,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:28:12,133 INFO L276 IsEmpty]: Start isEmpty. Operand 10639 states and 31265 transitions. [2024-11-14 05:28:12,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:28:12,146 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:28:12,146 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:28:12,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Ended with exit code 0 [2024-11-14 05:28:12,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,151 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:28:12,346 INFO L396 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:28:12,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:28:12,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1122788531, now seen corresponding path program 151 times [2024-11-14 05:28:12,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:28:12,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911572696] [2024-11-14 05:28:12,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:28:12,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:28:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:12,575 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:28:12,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:28:12,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911572696] [2024-11-14 05:28:12,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911572696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:28:12,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455196106] [2024-11-14 05:28:12,575 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:28:12,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:28:12,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:28:12,577 INFO L229 MonitoredProcess]: Starting monitored process 152 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:28:12,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2024-11-14 05:28:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:12,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:28:12,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:28:13,006 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:28:13,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:28:13,689 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:28:13,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455196106] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:28:13,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1400467459] [2024-11-14 05:28:13,690 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:28:13,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:28:13,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:28:13,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196637215] [2024-11-14 05:28:13,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:28:13,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:28:13,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:28:13,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:28:13,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1328, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:28:13,691 INFO L87 Difference]: Start difference. First operand 10639 states and 31265 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:28:17,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:28:17,491 INFO L93 Difference]: Finished difference Result 12863 states and 37294 transitions. [2024-11-14 05:28:17,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-11-14 05:28:17,492 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:28:17,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:28:17,521 INFO L225 Difference]: With dead ends: 12863 [2024-11-14 05:28:17,521 INFO L226 Difference]: Without dead ends: 12844 [2024-11-14 05:28:17,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3702 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1380, Invalid=9750, Unknown=0, NotChecked=0, Total=11130 [2024-11-14 05:28:17,526 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 379 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2925 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 3091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 2925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:28:17,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 67 Invalid, 3091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 2925 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 05:28:17,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12844 states. [2024-11-14 05:28:17,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12844 to 10661. [2024-11-14 05:28:17,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10661 states, 10660 states have (on average 2.9388367729831146) internal successors, (31328), 10660 states have internal predecessors, (31328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:28:17,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10661 states to 10661 states and 31328 transitions. [2024-11-14 05:28:17,722 INFO L78 Accepts]: Start accepts. Automaton has 10661 states and 31328 transitions. Word has length 24 [2024-11-14 05:28:17,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:28:17,722 INFO L471 AbstractCegarLoop]: Abstraction has 10661 states and 31328 transitions. [2024-11-14 05:28:17,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:28:17,722 INFO L276 IsEmpty]: Start isEmpty. Operand 10661 states and 31328 transitions. [2024-11-14 05:28:17,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:28:17,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:28:17,735 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:28:17,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Ended with exit code 0 [2024-11-14 05:28:17,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,152 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:28:17,936 INFO L396 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:28:17,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:28:17,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1807139363, now seen corresponding path program 152 times [2024-11-14 05:28:17,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:28:17,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520416461] [2024-11-14 05:28:17,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:28:17,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:28:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:18,155 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:28:18,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:28:18,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520416461] [2024-11-14 05:28:18,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520416461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:28:18,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004750679] [2024-11-14 05:28:18,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:28:18,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:28:18,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:28:18,157 INFO L229 MonitoredProcess]: Starting monitored process 153 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:28:18,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2024-11-14 05:28:18,204 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 05:28:18,204 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:28:18,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:28:18,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:28:18,597 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:28:18,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:28:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:28:19,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004750679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:28:19,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1265281893] [2024-11-14 05:28:19,248 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:28:19,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:28:19,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:28:19,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490295978] [2024-11-14 05:28:19,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:28:19,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:28:19,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:28:19,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:28:19,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1362, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:28:19,249 INFO L87 Difference]: Start difference. First operand 10661 states and 31328 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:28:23,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:28:23,515 INFO L93 Difference]: Finished difference Result 12523 states and 36372 transitions. [2024-11-14 05:28:23,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-11-14 05:28:23,516 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:28:23,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:28:23,547 INFO L225 Difference]: With dead ends: 12523 [2024-11-14 05:28:23,547 INFO L226 Difference]: Without dead ends: 12513 [2024-11-14 05:28:23,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4259 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1460, Invalid=11196, Unknown=0, NotChecked=0, Total=12656 [2024-11-14 05:28:23,551 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 287 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 2735 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 2880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 2735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-14 05:28:23,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 19 Invalid, 2880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 2735 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-14 05:28:23,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12513 states. [2024-11-14 05:28:23,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12513 to 10719. [2024-11-14 05:28:23,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10719 states, 10718 states have (on average 2.940007464079119) internal successors, (31511), 10718 states have internal predecessors, (31511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:28:23,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10719 states to 10719 states and 31511 transitions. [2024-11-14 05:28:23,741 INFO L78 Accepts]: Start accepts. Automaton has 10719 states and 31511 transitions. Word has length 24 [2024-11-14 05:28:23,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:28:23,741 INFO L471 AbstractCegarLoop]: Abstraction has 10719 states and 31511 transitions. [2024-11-14 05:28:23,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:28:23,742 INFO L276 IsEmpty]: Start isEmpty. Operand 10719 states and 31511 transitions. [2024-11-14 05:28:23,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:28:23,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:28:23,755 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:28:23,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Ended with exit code 0 [2024-11-14 05:28:23,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,153 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:28:23,955 INFO L396 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:28:23,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:28:23,956 INFO L85 PathProgramCache]: Analyzing trace with hash 700302805, now seen corresponding path program 153 times [2024-11-14 05:28:23,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:28:23,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501156240] [2024-11-14 05:28:23,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:28:23,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:28:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:24,189 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:28:24,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:28:24,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501156240] [2024-11-14 05:28:24,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501156240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:28:24,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065717986] [2024-11-14 05:28:24,190 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:28:24,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:28:24,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:28:24,191 INFO L229 MonitoredProcess]: Starting monitored process 154 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:28:24,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2024-11-14 05:28:24,240 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:28:24,240 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:28:24,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:28:24,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:28:24,624 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:28:24,624 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:28:25,304 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:28:25,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065717986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:28:25,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2074432482] [2024-11-14 05:28:25,304 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:28:25,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:28:25,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:28:25,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608710560] [2024-11-14 05:28:25,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:28:25,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:28:25,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:28:25,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:28:25,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1339, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:28:25,305 INFO L87 Difference]: Start difference. First operand 10719 states and 31511 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:28:29,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:28:29,445 INFO L93 Difference]: Finished difference Result 12887 states and 37406 transitions. [2024-11-14 05:28:29,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-11-14 05:28:29,445 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-14 05:28:29,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:28:29,480 INFO L225 Difference]: With dead ends: 12887 [2024-11-14 05:28:29,480 INFO L226 Difference]: Without dead ends: 12868 [2024-11-14 05:28:29,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4133 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1542, Invalid=10668, Unknown=0, NotChecked=0, Total=12210 [2024-11-14 05:28:29,485 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 341 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 2765 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 2912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:28:29,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 49 Invalid, 2912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2765 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 05:28:29,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12868 states. [2024-11-14 05:28:29,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12868 to 10721. [2024-11-14 05:28:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10721 states, 10720 states have (on average 2.9397388059701495) internal successors, (31514), 10720 states have internal predecessors, (31514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:28:29,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10721 states to 10721 states and 31514 transitions. [2024-11-14 05:28:29,706 INFO L78 Accepts]: Start accepts. Automaton has 10721 states and 31514 transitions. Word has length 24 [2024-11-14 05:28:29,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:28:29,706 INFO L471 AbstractCegarLoop]: Abstraction has 10721 states and 31514 transitions. [2024-11-14 05:28:29,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:28:29,706 INFO L276 IsEmpty]: Start isEmpty. Operand 10721 states and 31514 transitions. [2024-11-14 05:28:29,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:28:29,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:28:29,719 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:28:29,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Ended with exit code 0 [2024-11-14 05:28:29,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,154 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:28:29,920 INFO L396 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 05:28:29,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:28:29,920 INFO L85 PathProgramCache]: Analyzing trace with hash 395931815, now seen corresponding path program 154 times [2024-11-14 05:28:29,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:28:29,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856636795] [2024-11-14 05:28:29,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:28:29,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:28:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:30,158 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:28:30,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:28:30,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856636795] [2024-11-14 05:28:30,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856636795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:28:30,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041332998] [2024-11-14 05:28:30,159 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:28:30,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:28:30,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:28:30,160 INFO L229 MonitoredProcess]: Starting monitored process 155 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:28:30,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc691da-e8e0-4b02-90fc-888f5c870a77/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2024-11-14 05:28:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:28:30,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 05:28:30,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:28:30,637 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:28:30,638 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:28:31,368 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:28:31,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041332998] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:28:31,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [517147801] [2024-11-14 05:28:31,368 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 05:28:31,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:28:31,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-14 05:28:31,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850798373] [2024-11-14 05:28:31,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:28:31,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 05:28:31,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:28:31,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 05:28:31,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1345, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 05:28:31,369 INFO L87 Difference]: Start difference. First operand 10721 states and 31514 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)