./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i --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_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/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_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/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_ab49633c-e413-420a-8a22-e43a473c41a5/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 ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:33:02,805 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:33:02,889 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-13 23:33:02,896 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:33:02,896 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:33:02,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:33:02,923 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:33:02,923 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:33:02,924 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:33:02,924 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:33:02,924 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:33:02,924 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:33:02,925 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:33:02,925 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-13 23:33:02,925 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:33:02,925 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:33:02,925 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-13 23:33:02,925 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-13 23:33:02,925 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:33:02,926 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-13 23:33:02,926 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-13 23:33:02,926 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-13 23:33:02,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 23:33:02,927 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 23:33:02,929 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:33:02,929 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 23:33:02,929 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 23:33:02,930 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 23:33:02,930 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:33:02,930 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 23:33:02,930 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 23:33:02,930 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 23:33:02,930 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:33:02,930 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 23:33:02,930 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:33:02,930 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 23:33:02,930 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 23:33:02,930 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:33:02,931 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:33:02,931 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:33:02,931 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:33:02,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:33:02,934 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:33:02,934 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:33:02,934 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-13 23:33:02,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 23:33:02,934 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:33:02,935 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:33:02,935 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 23:33:02,935 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_ab49633c-e413-420a-8a22-e43a473c41a5/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 -> ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 [2024-11-13 23:33:03,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:33:03,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:33:03,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:33:03,279 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:33:03,280 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:33:03,281 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i Unable to find full path for "g++" [2024-11-13 23:33:05,278 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:33:05,660 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:33:05,663 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2024-11-13 23:33:05,678 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/data/042d44ffb/67a369d4668140299a7d29dd99cb4748/FLAG3dc4c3a9e [2024-11-13 23:33:05,691 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/data/042d44ffb/67a369d4668140299a7d29dd99cb4748 [2024-11-13 23:33:05,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:33:05,697 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:33:05,698 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:33:05,698 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:33:05,703 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:33:05,704 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:33:05" (1/1) ... [2024-11-13 23:33:05,705 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c9f83b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:05, skipping insertion in model container [2024-11-13 23:33:05,705 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:33:05" (1/1) ... [2024-11-13 23:33:05,739 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:33:06,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:33:06,205 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 23:33:06,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:33:06,323 INFO L204 MainTranslator]: Completed translation [2024-11-13 23:33:06,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:06 WrapperNode [2024-11-13 23:33:06,324 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:33:06,325 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 23:33:06,325 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 23:33:06,329 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 23:33:06,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:06" (1/1) ... [2024-11-13 23:33:06,350 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:06" (1/1) ... [2024-11-13 23:33:06,376 INFO L138 Inliner]: procedures = 266, calls = 100, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 159 [2024-11-13 23:33:06,376 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 23:33:06,377 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 23:33:06,377 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 23:33:06,377 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 23:33:06,385 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:06" (1/1) ... [2024-11-13 23:33:06,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:06" (1/1) ... [2024-11-13 23:33:06,389 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:06" (1/1) ... [2024-11-13 23:33:06,389 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:06" (1/1) ... [2024-11-13 23:33:06,398 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:06" (1/1) ... [2024-11-13 23:33:06,405 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:06" (1/1) ... [2024-11-13 23:33:06,407 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:06" (1/1) ... [2024-11-13 23:33:06,408 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:06" (1/1) ... [2024-11-13 23:33:06,412 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 23:33:06,413 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 23:33:06,413 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 23:33:06,413 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 23:33:06,418 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:06" (1/1) ... [2024-11-13 23:33:06,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:33:06,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:33:06,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 23:33:06,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 23:33:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-13 23:33:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 23:33:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-13 23:33:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-13 23:33:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 23:33:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 23:33:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-13 23:33:06,497 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-13 23:33:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 23:33:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 23:33:06,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 23:33:06,499 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 23:33:06,652 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 23:33:06,654 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 23:33:07,105 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 23:33:07,105 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 23:33:07,775 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 23:33:07,776 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 23:33:07,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:33:07 BoogieIcfgContainer [2024-11-13 23:33:07,777 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 23:33:07,780 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 23:33:07,780 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 23:33:07,787 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 23:33:07,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 11:33:05" (1/3) ... [2024-11-13 23:33:07,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d84d3af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:33:07, skipping insertion in model container [2024-11-13 23:33:07,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:33:06" (2/3) ... [2024-11-13 23:33:07,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d84d3af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:33:07, skipping insertion in model container [2024-11-13 23:33:07,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:33:07" (3/3) ... [2024-11-13 23:33:07,790 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2024-11-13 23:33:07,810 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 23:33:07,812 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 06-symbeq_02-funloop_norace.i that has 2 procedures, 31 locations, 1 initial locations, 3 loop locations, and 9 error locations. [2024-11-13 23:33:07,812 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 23:33:07,877 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 23:33:07,913 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 33 transitions, 70 flow [2024-11-13 23:33:07,964 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 197 states, 168 states have (on average 2.3333333333333335) internal successors, (392), 196 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:07,995 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 23:33:08,017 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;@63d84be7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 23:33:08,017 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-13 23:33:08,022 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 168 states have (on average 2.3333333333333335) internal successors, (392), 196 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:08,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 23:33:08,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:33:08,028 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 23:33:08,029 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 23:33:08,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:33:08,035 INFO L85 PathProgramCache]: Analyzing trace with hash -535978745, now seen corresponding path program 1 times [2024-11-13 23:33:08,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:33:08,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509941206] [2024-11-13 23:33:08,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:33:08,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:33:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:33:08,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:33:08,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:33:08,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509941206] [2024-11-13 23:33:08,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509941206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:33:08,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:33:08,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:33:08,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413071397] [2024-11-13 23:33:08,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:33:08,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:33:08,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:33:08,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:33:08,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:33:08,439 INFO L87 Difference]: Start difference. First operand has 197 states, 168 states have (on average 2.3333333333333335) internal successors, (392), 196 states have internal predecessors, (392), 0 states have call successors, (0), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:08,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:33:08,567 INFO L93 Difference]: Finished difference Result 393 states and 783 transitions. [2024-11-13 23:33:08,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:33:08,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-11-13 23:33:08,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:33:08,580 INFO L225 Difference]: With dead ends: 393 [2024-11-13 23:33:08,581 INFO L226 Difference]: Without dead ends: 198 [2024-11-13 23:33:08,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:33:08,587 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:33:08,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:33:08,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-13 23:33:08,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2024-11-13 23:33:08,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 169 states have (on average 2.3254437869822486) internal successors, (393), 197 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:08,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 393 transitions. [2024-11-13 23:33:08,662 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 393 transitions. Word has length 6 [2024-11-13 23:33:08,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:33:08,663 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 393 transitions. [2024-11-13 23:33:08,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:08,664 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 393 transitions. [2024-11-13 23:33:08,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 23:33:08,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:33:08,665 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:33:08,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 23:33:08,665 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 23:33:08,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:33:08,667 INFO L85 PathProgramCache]: Analyzing trace with hash 500789437, now seen corresponding path program 1 times [2024-11-13 23:33:08,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:33:08,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542100868] [2024-11-13 23:33:08,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:33:08,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:33:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:33:08,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:33:08,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:33:08,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542100868] [2024-11-13 23:33:08,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542100868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:33:08,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859215853] [2024-11-13 23:33:08,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:33:08,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:33:08,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:33:08,942 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:33:08,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 23:33:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:33:09,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 23:33:09,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:33:09,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 23:33:09,168 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:33:09,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859215853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:33:09,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:33:09,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2024-11-13 23:33:09,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561601989] [2024-11-13 23:33:09,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:33:09,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:33:09,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:33:09,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:33:09,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:33:09,171 INFO L87 Difference]: Start difference. First operand 198 states and 393 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:09,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:33:09,243 INFO L93 Difference]: Finished difference Result 198 states and 393 transitions. [2024-11-13 23:33:09,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:33:09,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2024-11-13 23:33:09,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:33:09,246 INFO L225 Difference]: With dead ends: 198 [2024-11-13 23:33:09,246 INFO L226 Difference]: Without dead ends: 184 [2024-11-13 23:33:09,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:33:09,248 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:33:09,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 6 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:33:09,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-13 23:33:09,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-11-13 23:33:09,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 160 states have (on average 2.28125) internal successors, (365), 183 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:09,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 365 transitions. [2024-11-13 23:33:09,269 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 365 transitions. Word has length 7 [2024-11-13 23:33:09,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:33:09,270 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 365 transitions. [2024-11-13 23:33:09,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:09,270 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 365 transitions. [2024-11-13 23:33:09,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 23:33:09,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:33:09,271 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:33:09,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 23:33:09,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:33:09,472 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 23:33:09,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:33:09,475 INFO L85 PathProgramCache]: Analyzing trace with hash 222289260, now seen corresponding path program 1 times [2024-11-13 23:33:09,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:33:09,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355041700] [2024-11-13 23:33:09,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:33:09,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:33:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:33:09,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:33:09,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:33:09,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355041700] [2024-11-13 23:33:09,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355041700] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:33:09,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765261194] [2024-11-13 23:33:09,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:33:09,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:33:09,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:33:09,689 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:33:09,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 23:33:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:33:09,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:33:09,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:33:09,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:33:09,866 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:33:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:33:09,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765261194] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:33:09,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1344575881] [2024-11-13 23:33:09,912 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) [2024-11-13 23:33:09,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:33:09,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-13 23:33:09,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504155837] [2024-11-13 23:33:09,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:33:09,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 23:33:09,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:33:09,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 23:33:09,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:33:09,921 INFO L87 Difference]: Start difference. First operand 184 states and 365 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:10,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:33:10,024 INFO L93 Difference]: Finished difference Result 368 states and 732 transitions. [2024-11-13 23:33:10,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 23:33:10,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 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 9 [2024-11-13 23:33:10,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:33:10,027 INFO L225 Difference]: With dead ends: 368 [2024-11-13 23:33:10,027 INFO L226 Difference]: Without dead ends: 187 [2024-11-13 23:33:10,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:33:10,031 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:33:10,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:33:10,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-13 23:33:10,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2024-11-13 23:33:10,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 163 states have (on average 2.2576687116564416) internal successors, (368), 186 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:10,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 368 transitions. [2024-11-13 23:33:10,052 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 368 transitions. Word has length 9 [2024-11-13 23:33:10,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:33:10,052 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 368 transitions. [2024-11-13 23:33:10,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:10,053 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 368 transitions. [2024-11-13 23:33:10,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 23:33:10,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:33:10,056 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:33:10,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 23:33:10,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:33:10,256 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 23:33:10,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:33:10,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1303575734, now seen corresponding path program 2 times [2024-11-13 23:33:10,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:33:10,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726803945] [2024-11-13 23:33:10,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:33:10,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:33:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:33:10,513 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 23:33:10,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:33:10,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726803945] [2024-11-13 23:33:10,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726803945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:33:10,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:33:10,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:33:10,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675967067] [2024-11-13 23:33:10,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:33:10,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:33:10,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:33:10,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:33:10,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:33:10,515 INFO L87 Difference]: Start difference. First operand 187 states and 368 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:10,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:33:10,628 INFO L93 Difference]: Finished difference Result 187 states and 368 transitions. [2024-11-13 23:33:10,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:33:10,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 12 [2024-11-13 23:33:10,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:33:10,631 INFO L225 Difference]: With dead ends: 187 [2024-11-13 23:33:10,633 INFO L226 Difference]: Without dead ends: 161 [2024-11-13 23:33:10,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:33:10,635 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 42 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:33:10,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 10 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:33:10,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-13 23:33:10,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2024-11-13 23:33:10,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 147 states have (on average 2.1496598639455784) internal successors, (316), 160 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:10,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 316 transitions. [2024-11-13 23:33:10,656 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 316 transitions. Word has length 12 [2024-11-13 23:33:10,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:33:10,658 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 316 transitions. [2024-11-13 23:33:10,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:10,659 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 316 transitions. [2024-11-13 23:33:10,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 23:33:10,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:33:10,659 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:33:10,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 23:33:10,660 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 23:33:10,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:33:10,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1303575735, now seen corresponding path program 1 times [2024-11-13 23:33:10,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:33:10,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111057342] [2024-11-13 23:33:10,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:33:10,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:33:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:33:10,867 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:33:10,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:33:10,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111057342] [2024-11-13 23:33:10,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111057342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:33:10,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390399388] [2024-11-13 23:33:10,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:33:10,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:33:10,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:33:10,870 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:33:10,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 23:33:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:33:11,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 23:33:11,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:33:11,064 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:33:11,065 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:33:11,154 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:33:11,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390399388] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:33:11,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1913096938] [2024-11-13 23:33:11,155 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) [2024-11-13 23:33:11,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:33:11,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-13 23:33:11,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529087352] [2024-11-13 23:33:11,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:33:11,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 23:33:11,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:33:11,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 23:33:11,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-13 23:33:11,157 INFO L87 Difference]: Start difference. First operand 161 states and 316 transitions. Second operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:11,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:33:11,308 INFO L93 Difference]: Finished difference Result 322 states and 637 transitions. [2024-11-13 23:33:11,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 23:33:11,309 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 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 12 [2024-11-13 23:33:11,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:33:11,311 INFO L225 Difference]: With dead ends: 322 [2024-11-13 23:33:11,311 INFO L226 Difference]: Without dead ends: 167 [2024-11-13 23:33:11,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-13 23:33:11,313 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:33:11,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:33:11,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-13 23:33:11,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2024-11-13 23:33:11,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 153 states have (on average 2.104575163398693) internal successors, (322), 166 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:11,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 322 transitions. [2024-11-13 23:33:11,325 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 322 transitions. Word has length 12 [2024-11-13 23:33:11,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:33:11,325 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 322 transitions. [2024-11-13 23:33:11,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:11,325 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 322 transitions. [2024-11-13 23:33:11,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 23:33:11,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:33:11,326 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:33:11,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 23:33:11,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:33:11,531 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 23:33:11,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:33:11,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1820729591, now seen corresponding path program 2 times [2024-11-13 23:33:11,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:33:11,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931988649] [2024-11-13 23:33:11,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:33:11,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:33:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:33:11,881 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 23:33:11,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:33:11,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931988649] [2024-11-13 23:33:11,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931988649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:33:11,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:33:11,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:33:11,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369942499] [2024-11-13 23:33:11,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:33:11,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 23:33:11,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:33:11,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 23:33:11,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:33:11,884 INFO L87 Difference]: Start difference. First operand 167 states and 322 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:12,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:33:12,067 INFO L93 Difference]: Finished difference Result 308 states and 604 transitions. [2024-11-13 23:33:12,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:33:12,068 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 [2024-11-13 23:33:12,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:33:12,070 INFO L225 Difference]: With dead ends: 308 [2024-11-13 23:33:12,070 INFO L226 Difference]: Without dead ends: 258 [2024-11-13 23:33:12,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:33:12,071 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 66 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:33:12,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 21 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:33:12,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-13 23:33:12,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 232. [2024-11-13 23:33:12,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 218 states have (on average 2.073394495412844) internal successors, (452), 231 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:12,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 452 transitions. [2024-11-13 23:33:12,093 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 452 transitions. Word has length 18 [2024-11-13 23:33:12,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:33:12,093 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 452 transitions. [2024-11-13 23:33:12,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:12,094 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 452 transitions. [2024-11-13 23:33:12,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 23:33:12,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:33:12,095 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:33:12,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 23:33:12,095 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 23:33:12,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:33:12,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1836505092, now seen corresponding path program 1 times [2024-11-13 23:33:12,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:33:12,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103643918] [2024-11-13 23:33:12,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:33:12,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:33:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:33:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 23:33:12,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:33:12,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103643918] [2024-11-13 23:33:12,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103643918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:33:12,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:33:12,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:33:12,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895108442] [2024-11-13 23:33:12,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:33:12,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 23:33:12,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:33:12,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 23:33:12,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:33:12,430 INFO L87 Difference]: Start difference. First operand 232 states and 452 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:12,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:33:12,592 INFO L93 Difference]: Finished difference Result 434 states and 856 transitions. [2024-11-13 23:33:12,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:33:12,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 [2024-11-13 23:33:12,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:33:12,596 INFO L225 Difference]: With dead ends: 434 [2024-11-13 23:33:12,596 INFO L226 Difference]: Without dead ends: 385 [2024-11-13 23:33:12,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:33:12,597 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 70 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:33:12,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 11 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:33:12,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-13 23:33:12,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 317. [2024-11-13 23:33:12,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 303 states have (on average 2.165016501650165) internal successors, (656), 316 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:12,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 656 transitions. [2024-11-13 23:33:12,617 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 656 transitions. Word has length 18 [2024-11-13 23:33:12,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:33:12,620 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 656 transitions. [2024-11-13 23:33:12,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:12,620 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 656 transitions. [2024-11-13 23:33:12,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 23:33:12,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:33:12,622 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:33:12,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 23:33:12,622 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 23:33:12,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:33:12,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1836505091, now seen corresponding path program 1 times [2024-11-13 23:33:12,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:33:12,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174521607] [2024-11-13 23:33:12,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:33:12,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:33:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:33:12,779 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 23:33:12,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:33:12,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174521607] [2024-11-13 23:33:12,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174521607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:33:12,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:33:12,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:33:12,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531845726] [2024-11-13 23:33:12,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:33:12,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:33:12,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:33:12,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:33:12,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:33:12,782 INFO L87 Difference]: Start difference. First operand 317 states and 656 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:12,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:33:12,869 INFO L93 Difference]: Finished difference Result 317 states and 656 transitions. [2024-11-13 23:33:12,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:33:12,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 [2024-11-13 23:33:12,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:33:12,872 INFO L225 Difference]: With dead ends: 317 [2024-11-13 23:33:12,872 INFO L226 Difference]: Without dead ends: 283 [2024-11-13 23:33:12,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:33:12,873 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 39 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:33:12,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 10 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:33:12,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-13 23:33:12,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2024-11-13 23:33:12,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 275 states have (on average 2.0145454545454546) internal successors, (554), 282 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:12,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 554 transitions. [2024-11-13 23:33:12,891 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 554 transitions. Word has length 18 [2024-11-13 23:33:12,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:33:12,891 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 554 transitions. [2024-11-13 23:33:12,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:12,892 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 554 transitions. [2024-11-13 23:33:12,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 23:33:12,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:33:12,895 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:33:12,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 23:33:12,895 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 23:33:12,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:33:12,896 INFO L85 PathProgramCache]: Analyzing trace with hash -187225457, now seen corresponding path program 1 times [2024-11-13 23:33:12,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:33:12,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016855080] [2024-11-13 23:33:12,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:33:12,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:33:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:33:13,270 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 23:33:13,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:33:13,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016855080] [2024-11-13 23:33:13,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016855080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:33:13,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789981407] [2024-11-13 23:33:13,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:33:13,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:33:13,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:33:13,273 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:33:13,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 23:33:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:33:13,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 23:33:13,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:33:13,752 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 23:33:13,752 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:33:13,975 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 23:33:13,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789981407] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:33:13,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [729192899] [2024-11-13 23:33:13,976 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) [2024-11-13 23:33:13,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:33:13,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-13 23:33:13,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220424628] [2024-11-13 23:33:13,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:33:13,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 23:33:13,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:33:13,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 23:33:13,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-13 23:33:13,978 INFO L87 Difference]: Start difference. First operand 283 states and 554 transitions. Second operand has 14 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:14,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:33:14,553 INFO L93 Difference]: Finished difference Result 697 states and 1492 transitions. [2024-11-13 23:33:14,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 23:33:14,554 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 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 25 [2024-11-13 23:33:14,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:33:14,559 INFO L225 Difference]: With dead ends: 697 [2024-11-13 23:33:14,559 INFO L226 Difference]: Without dead ends: 635 [2024-11-13 23:33:14,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2024-11-13 23:33:14,562 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 269 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:33:14,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 31 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 23:33:14,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2024-11-13 23:33:14,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 587. [2024-11-13 23:33:14,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 582 states have (on average 1.9965635738831615) internal successors, (1162), 586 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:14,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 1162 transitions. [2024-11-13 23:33:14,597 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 1162 transitions. Word has length 25 [2024-11-13 23:33:14,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:33:14,597 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 1162 transitions. [2024-11-13 23:33:14,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:14,598 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 1162 transitions. [2024-11-13 23:33:14,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 23:33:14,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:33:14,599 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:33:14,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 23:33:14,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:33:14,803 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 23:33:14,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:33:14,804 INFO L85 PathProgramCache]: Analyzing trace with hash -326166604, now seen corresponding path program 1 times [2024-11-13 23:33:14,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:33:14,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014291496] [2024-11-13 23:33:14,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:33:14,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:33:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:33:15,157 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 23:33:15,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:33:15,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014291496] [2024-11-13 23:33:15,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014291496] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:33:15,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810451053] [2024-11-13 23:33:15,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:33:15,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:33:15,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:33:15,160 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:33:15,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 23:33:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:33:15,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 23:33:15,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:33:15,539 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 23:33:15,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:33:15,725 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 23:33:15,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810451053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:33:15,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1047130525] [2024-11-13 23:33:15,726 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) [2024-11-13 23:33:15,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:33:15,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-13 23:33:15,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010904373] [2024-11-13 23:33:15,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:33:15,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 23:33:15,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:33:15,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 23:33:15,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-13 23:33:15,729 INFO L87 Difference]: Start difference. First operand 587 states and 1162 transitions. Second operand has 14 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:16,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:33:16,277 INFO L93 Difference]: Finished difference Result 1485 states and 3206 transitions. [2024-11-13 23:33:16,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 23:33:16,277 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 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 25 [2024-11-13 23:33:16,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:33:16,284 INFO L225 Difference]: With dead ends: 1485 [2024-11-13 23:33:16,284 INFO L226 Difference]: Without dead ends: 1379 [2024-11-13 23:33:16,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2024-11-13 23:33:16,286 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 317 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:33:16,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 37 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 23:33:16,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2024-11-13 23:33:16,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1271. [2024-11-13 23:33:16,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 1268 states have (on average 1.9952681388012619) internal successors, (2530), 1270 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:16,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 2530 transitions. [2024-11-13 23:33:16,330 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 2530 transitions. Word has length 25 [2024-11-13 23:33:16,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:33:16,330 INFO L471 AbstractCegarLoop]: Abstraction has 1271 states and 2530 transitions. [2024-11-13 23:33:16,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:16,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 2530 transitions. [2024-11-13 23:33:16,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 23:33:16,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:33:16,333 INFO L215 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-11-13 23:33:16,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 23:33:16,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 23:33:16,533 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 23:33:16,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:33:16,534 INFO L85 PathProgramCache]: Analyzing trace with hash -2038011145, now seen corresponding path program 2 times [2024-11-13 23:33:16,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:33:16,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405766935] [2024-11-13 23:33:16,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:33:16,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:33:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:33:17,078 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 23:33:17,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:33:17,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405766935] [2024-11-13 23:33:17,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405766935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:33:17,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406764869] [2024-11-13 23:33:17,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 23:33:17,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:33:17,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:33:17,082 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:33:17,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 23:33:17,245 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 23:33:17,246 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:33:17,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 23:33:17,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:33:17,672 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-13 23:33:17,672 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:33:18,176 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-13 23:33:18,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406764869] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:33:18,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1854460282] [2024-11-13 23:33:18,176 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) [2024-11-13 23:33:18,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:33:18,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 17 [2024-11-13 23:33:18,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762975794] [2024-11-13 23:33:18,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:33:18,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 23:33:18,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:33:18,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 23:33:18,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-11-13 23:33:18,182 INFO L87 Difference]: Start difference. First operand 1271 states and 2530 transitions. Second operand has 19 states, 18 states have (on average 4.611111111111111) internal successors, (83), 18 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:19,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:33:19,145 INFO L93 Difference]: Finished difference Result 1689 states and 3401 transitions. [2024-11-13 23:33:19,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 23:33:19,147 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.611111111111111) internal successors, (83), 18 states have internal predecessors, (83), 0 states have call successors, (0), 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 46 [2024-11-13 23:33:19,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:33:19,156 INFO L225 Difference]: With dead ends: 1689 [2024-11-13 23:33:19,156 INFO L226 Difference]: Without dead ends: 1543 [2024-11-13 23:33:19,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2024-11-13 23:33:19,158 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 541 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:33:19,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 105 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 23:33:19,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2024-11-13 23:33:19,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1339. [2024-11-13 23:33:19,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 1338 states have (on average 1.992526158445441) internal successors, (2666), 1338 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:19,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 2666 transitions. [2024-11-13 23:33:19,209 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 2666 transitions. Word has length 46 [2024-11-13 23:33:19,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:33:19,209 INFO L471 AbstractCegarLoop]: Abstraction has 1339 states and 2666 transitions. [2024-11-13 23:33:19,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.611111111111111) internal successors, (83), 18 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:19,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 2666 transitions. [2024-11-13 23:33:19,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 23:33:19,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:33:19,211 INFO L215 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-11-13 23:33:19,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 23:33:19,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:33:19,418 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 23:33:19,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:33:19,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1462586372, now seen corresponding path program 2 times [2024-11-13 23:33:19,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:33:19,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799476683] [2024-11-13 23:33:19,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:33:19,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:33:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:33:19,933 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 23:33:19,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:33:19,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799476683] [2024-11-13 23:33:19,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799476683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:33:19,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989825945] [2024-11-13 23:33:19,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 23:33:19,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:33:19,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:33:19,936 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:33:19,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 23:33:20,117 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 23:33:20,118 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:33:20,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 23:33:20,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:33:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-13 23:33:20,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:33:21,005 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-13 23:33:21,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989825945] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:33:21,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1836109778] [2024-11-13 23:33:21,007 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) [2024-11-13 23:33:21,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:33:21,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 17 [2024-11-13 23:33:21,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844184532] [2024-11-13 23:33:21,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:33:21,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 23:33:21,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:33:21,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 23:33:21,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-11-13 23:33:21,010 INFO L87 Difference]: Start difference. First operand 1339 states and 2666 transitions. Second operand has 19 states, 18 states have (on average 4.611111111111111) internal successors, (83), 18 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:22,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:33:22,021 INFO L93 Difference]: Finished difference Result 1729 states and 3485 transitions. [2024-11-13 23:33:22,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 23:33:22,021 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.611111111111111) internal successors, (83), 18 states have internal predecessors, (83), 0 states have call successors, (0), 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 46 [2024-11-13 23:33:22,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:33:22,024 INFO L225 Difference]: With dead ends: 1729 [2024-11-13 23:33:22,024 INFO L226 Difference]: Without dead ends: 0 [2024-11-13 23:33:22,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2024-11-13 23:33:22,028 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 441 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:33:22,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 116 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 23:33:22,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-13 23:33:22,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-13 23:33:22,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:22,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-13 23:33:22,031 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2024-11-13 23:33:22,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:33:22,032 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 23:33:22,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.611111111111111) internal successors, (83), 18 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 23:33:22,032 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-13 23:33:22,032 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-13 23:33:22,035 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (13 of 14 remaining) [2024-11-13 23:33:22,036 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2024-11-13 23:33:22,036 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2024-11-13 23:33:22,037 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2024-11-13 23:33:22,037 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2024-11-13 23:33:22,037 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 14 remaining) [2024-11-13 23:33:22,037 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2024-11-13 23:33:22,037 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2024-11-13 23:33:22,037 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2024-11-13 23:33:22,037 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2024-11-13 23:33:22,038 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2024-11-13 23:33:22,038 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2024-11-13 23:33:22,038 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2024-11-13 23:33:22,038 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 14 remaining) [2024-11-13 23:33:22,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 23:33:22,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:33:22,242 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1] [2024-11-13 23:33:22,246 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 23:33:22,246 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 23:33:22,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 11:33:22 BasicIcfg [2024-11-13 23:33:22,249 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 23:33:22,250 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 23:33:22,250 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 23:33:22,250 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 23:33:22,251 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:33:07" (3/4) ... [2024-11-13 23:33:22,253 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 23:33:22,256 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-13 23:33:22,261 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 119 nodes and edges [2024-11-13 23:33:22,262 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-13 23:33:22,262 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-13 23:33:22,262 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-13 23:33:22,341 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-13 23:33:22,341 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/witness.yml [2024-11-13 23:33:22,341 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 23:33:22,342 INFO L158 Benchmark]: Toolchain (without parser) took 16647.04ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 92.7MB in the beginning and 143.8MB in the end (delta: -51.2MB). Peak memory consumption was 184.0MB. Max. memory is 16.1GB. [2024-11-13 23:33:22,343 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 167.8MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 23:33:22,343 INFO L158 Benchmark]: CACSL2BoogieTranslator took 626.48ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 62.7MB in the end (delta: 30.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-13 23:33:22,343 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.25ms. Allocated memory is still 117.4MB. Free memory was 62.7MB in the beginning and 60.2MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 23:33:22,344 INFO L158 Benchmark]: Boogie Preprocessor took 35.29ms. Allocated memory is still 117.4MB. Free memory was 60.2MB in the beginning and 58.4MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 23:33:22,344 INFO L158 Benchmark]: RCFGBuilder took 1364.45ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 58.4MB in the beginning and 278.7MB in the end (delta: -220.4MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. [2024-11-13 23:33:22,344 INFO L158 Benchmark]: TraceAbstraction took 14469.36ms. Allocated memory is still 352.3MB. Free memory was 278.1MB in the beginning and 147.9MB in the end (delta: 130.1MB). Peak memory consumption was 126.2MB. Max. memory is 16.1GB. [2024-11-13 23:33:22,345 INFO L158 Benchmark]: Witness Printer took 91.42ms. Allocated memory is still 352.3MB. Free memory was 147.9MB in the beginning and 143.8MB in the end (delta: 4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 23:33:22,346 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 167.8MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 626.48ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 62.7MB in the end (delta: 30.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.25ms. Allocated memory is still 117.4MB. Free memory was 62.7MB in the beginning and 60.2MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.29ms. Allocated memory is still 117.4MB. Free memory was 60.2MB in the beginning and 58.4MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1364.45ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 58.4MB in the beginning and 278.7MB in the end (delta: -220.4MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. * TraceAbstraction took 14469.36ms. Allocated memory is still 352.3MB. Free memory was 278.1MB in the beginning and 147.9MB in the end (delta: 130.1MB). Peak memory consumption was 126.2MB. Max. memory is 16.1GB. * Witness Printer took 91.42ms. Allocated memory is still 352.3MB. Free memory was 147.9MB in the beginning and 143.8MB in the end (delta: 4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 932]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 45 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 14.3s, OverallIterations: 12, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1810 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1810 mSDsluCounter, 447 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 338 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3160 IncrementalHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 109 mSDtfsCounter, 3160 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 408 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1339occurred in iteration=11, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 454 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 412 NumberOfCodeBlocks, 372 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 550 ConstructedInterpolants, 0 QuantifiedInterpolants, 6528 SizeOfPredicates, 26 NumberOfNonLiveVariables, 2295 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 25 InterpolantComputations, 6 PerfectInterpolantSequences, 976/1242 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-13 23:33:22,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49633c-e413-420a-8a22-e43a473c41a5/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE