./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071e50a4-4ea7-4375-9a0d-13592bc84577/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071e50a4-4ea7-4375-9a0d-13592bc84577/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_071e50a4-4ea7-4375-9a0d-13592bc84577/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071e50a4-4ea7-4375-9a0d-13592bc84577/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071e50a4-4ea7-4375-9a0d-13592bc84577/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071e50a4-4ea7-4375-9a0d-13592bc84577/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d7ba2cbd8ed9f48aa977924dd556bad66f28ba8aaa41d75f8db9183096d20ba1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:55:40,147 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:55:40,260 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071e50a4-4ea7-4375-9a0d-13592bc84577/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 04:55:40,269 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:55:40,269 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:55:40,298 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:55:40,298 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:55:40,299 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:55:40,299 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:55:40,299 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:55:40,299 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:55:40,299 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:55:40,299 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:55:40,300 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:55:40,300 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:55:40,300 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:55:40,300 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:55:40,300 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:55:40,300 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:55:40,301 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:55:40,301 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:55:40,301 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:55:40,301 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:55:40,301 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:55:40,301 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:55:40,302 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:55:40,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:55:40,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:55:40,302 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:55:40,302 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:55:40,302 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:55:40,302 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:55:40,302 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:55:40,302 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:55:40,303 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:55:40,303 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:55:40,303 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:55:40,303 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:55:40,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:55:40,303 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:55:40,303 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:55:40,303 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:55:40,303 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:55:40,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:55:40,307 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:55:40,307 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:55:40,307 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:55:40,307 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_071e50a4-4ea7-4375-9a0d-13592bc84577/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 ! call(reach_error())) ) 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 -> d7ba2cbd8ed9f48aa977924dd556bad66f28ba8aaa41d75f8db9183096d20ba1 [2024-11-14 04:55:40,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:55:40,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:55:40,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:55:40,678 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:55:40,678 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:55:40,680 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071e50a4-4ea7-4375-9a0d-13592bc84577/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c Unable to find full path for "g++" [2024-11-14 04:55:42,891 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:55:43,270 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:55:43,271 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071e50a4-4ea7-4375-9a0d-13592bc84577/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2024-11-14 04:55:43,302 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071e50a4-4ea7-4375-9a0d-13592bc84577/bin/utaipan-verify-sOmjnqqW8E/data/dd0c20106/8e661eedf059450e8297506e9b9af238/FLAGa8dad6b60 [2024-11-14 04:55:43,320 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071e50a4-4ea7-4375-9a0d-13592bc84577/bin/utaipan-verify-sOmjnqqW8E/data/dd0c20106/8e661eedf059450e8297506e9b9af238 [2024-11-14 04:55:43,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:55:43,325 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:55:43,329 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:55:43,330 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:55:43,336 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:55:43,337 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:55:43" (1/1) ... [2024-11-14 04:55:43,338 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35947be5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:43, skipping insertion in model container [2024-11-14 04:55:43,338 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:55:43" (1/1) ... [2024-11-14 04:55:43,368 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:55:43,574 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071e50a4-4ea7-4375-9a0d-13592bc84577/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c[3054,3067] [2024-11-14 04:55:43,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:55:43,591 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:55:43,614 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071e50a4-4ea7-4375-9a0d-13592bc84577/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c[3054,3067] [2024-11-14 04:55:43,616 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:55:43,632 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:55:43,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:43 WrapperNode [2024-11-14 04:55:43,632 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:55:43,633 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:55:43,634 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:55:43,634 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:55:43,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:43" (1/1) ... [2024-11-14 04:55:43,645 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:43" (1/1) ... [2024-11-14 04:55:43,669 INFO L138 Inliner]: procedures = 22, calls = 16, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 196 [2024-11-14 04:55:43,669 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:55:43,670 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:55:43,670 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:55:43,670 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:55:43,676 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:43" (1/1) ... [2024-11-14 04:55:43,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:43" (1/1) ... [2024-11-14 04:55:43,678 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:43" (1/1) ... [2024-11-14 04:55:43,679 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:43" (1/1) ... [2024-11-14 04:55:43,685 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:43" (1/1) ... [2024-11-14 04:55:43,687 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:43" (1/1) ... [2024-11-14 04:55:43,689 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:43" (1/1) ... [2024-11-14 04:55:43,690 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:43" (1/1) ... [2024-11-14 04:55:43,693 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:55:43,694 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:55:43,694 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:55:43,694 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:55:43,695 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:43" (1/1) ... [2024-11-14 04:55:43,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:55:43,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071e50a4-4ea7-4375-9a0d-13592bc84577/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:55:43,739 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071e50a4-4ea7-4375-9a0d-13592bc84577/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:55:43,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071e50a4-4ea7-4375-9a0d-13592bc84577/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:55:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:55:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-14 04:55:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-14 04:55:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-14 04:55:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-14 04:55:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-14 04:55:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-14 04:55:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:55:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:55:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:55:43,776 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-14 04:55:43,907 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:55:43,909 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:55:44,411 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-14 04:55:44,415 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:55:45,107 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:55:45,108 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-14 04:55:45,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:55:45 BoogieIcfgContainer [2024-11-14 04:55:45,109 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:55:45,111 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:55:45,111 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:55:45,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:55:45,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:55:43" (1/3) ... [2024-11-14 04:55:45,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a54f43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:55:45, skipping insertion in model container [2024-11-14 04:55:45,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:43" (2/3) ... [2024-11-14 04:55:45,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a54f43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:55:45, skipping insertion in model container [2024-11-14 04:55:45,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:55:45" (3/3) ... [2024-11-14 04:55:45,120 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-subst.wvr.c [2024-11-14 04:55:45,138 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:55:45,142 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-file-item-subst.wvr.c that has 4 procedures, 20 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-14 04:55:45,142 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-14 04:55:45,252 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-14 04:55:45,293 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 19 transitions, 59 flow [2024-11-14 04:55:45,312 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 39 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 38 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:55:45,345 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:55:45,361 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=LoopHeads, 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;@6caf9fe2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:55:45,363 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-14 04:55:45,365 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 38 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:55:45,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 04:55:45,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:55:45,372 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:55:45,373 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 04:55:45,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:55:45,379 INFO L85 PathProgramCache]: Analyzing trace with hash -296469437, now seen corresponding path program 1 times [2024-11-14 04:55:45,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:55:45,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022399251] [2024-11-14 04:55:45,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:55:45,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:55:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:55:52,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:55:52,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:55:52,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022399251] [2024-11-14 04:55:52,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022399251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:55:52,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:55:52,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:55:52,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107679443] [2024-11-14 04:55:52,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:55:52,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:55:52,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:55:52,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:55:52,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:55:52,265 INFO L87 Difference]: Start difference. First operand has 39 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 38 states have internal predecessors, (70), 0 states have call successors, (0), 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 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:55:53,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:55:53,053 INFO L93 Difference]: Finished difference Result 59 states and 91 transitions. [2024-11-14 04:55:53,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:55:53,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-14 04:55:53,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:55:53,064 INFO L225 Difference]: With dead ends: 59 [2024-11-14 04:55:53,064 INFO L226 Difference]: Without dead ends: 46 [2024-11-14 04:55:53,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:55:53,071 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 29 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:55:53,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:55:53,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-14 04:55:53,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2024-11-14 04:55:53,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.7105263157894737) internal successors, (65), 38 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:55:53,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 65 transitions. [2024-11-14 04:55:53,107 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 65 transitions. Word has length 15 [2024-11-14 04:55:53,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:55:53,108 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 65 transitions. [2024-11-14 04:55:53,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:55:53,108 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 65 transitions. [2024-11-14 04:55:53,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 04:55:53,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:55:53,109 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:55:53,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:55:53,110 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 04:55:53,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:55:53,110 INFO L85 PathProgramCache]: Analyzing trace with hash 398450475, now seen corresponding path program 2 times [2024-11-14 04:55:53,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:55:53,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532209211] [2024-11-14 04:55:53,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:55:53,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:55:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:55:56,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:55:56,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:55:56,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532209211] [2024-11-14 04:55:56,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532209211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:55:56,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:55:56,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:55:56,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463298039] [2024-11-14 04:55:56,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:55:56,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:55:56,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:55:56,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:55:56,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:55:56,068 INFO L87 Difference]: Start difference. First operand 39 states and 65 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:55:56,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:55:56,751 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2024-11-14 04:55:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:55:56,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-14 04:55:56,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:55:56,753 INFO L225 Difference]: With dead ends: 56 [2024-11-14 04:55:56,753 INFO L226 Difference]: Without dead ends: 39 [2024-11-14 04:55:56,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:55:56,755 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 28 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:55:56,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:55:56,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-14 04:55:56,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2024-11-14 04:55:56,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:55:56,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 50 transitions. [2024-11-14 04:55:56,760 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 50 transitions. Word has length 15 [2024-11-14 04:55:56,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:55:56,761 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 50 transitions. [2024-11-14 04:55:56,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:55:56,761 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 50 transitions. [2024-11-14 04:55:56,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 04:55:56,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:55:56,762 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:55:56,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 04:55:56,762 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 04:55:56,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:55:56,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1069362585, now seen corresponding path program 3 times [2024-11-14 04:55:56,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:55:56,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315546805] [2024-11-14 04:55:56,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:55:56,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:55:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:55:59,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:55:59,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:55:59,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315546805] [2024-11-14 04:55:59,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315546805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:55:59,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:55:59,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:55:59,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809343495] [2024-11-14 04:55:59,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:55:59,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:55:59,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:55:59,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:55:59,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:55:59,879 INFO L87 Difference]: Start difference. First operand 32 states and 50 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:56:00,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:56:00,900 INFO L93 Difference]: Finished difference Result 46 states and 62 transitions. [2024-11-14 04:56:00,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:56:00,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-14 04:56:00,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:56:00,902 INFO L225 Difference]: With dead ends: 46 [2024-11-14 04:56:00,902 INFO L226 Difference]: Without dead ends: 33 [2024-11-14 04:56:00,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:56:00,903 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 29 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:56:00,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:56:00,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-14 04:56:00,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2024-11-14 04:56:00,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:56:00,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2024-11-14 04:56:00,910 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15 [2024-11-14 04:56:00,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:56:00,911 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2024-11-14 04:56:00,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:56:00,911 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2024-11-14 04:56:00,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 04:56:00,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:56:00,912 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:56:00,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 04:56:00,912 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 04:56:00,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:56:00,913 INFO L85 PathProgramCache]: Analyzing trace with hash 680265311, now seen corresponding path program 4 times [2024-11-14 04:56:00,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:56:00,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516024243] [2024-11-14 04:56:00,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:56:00,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:56:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:56:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:56:03,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:56:03,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516024243] [2024-11-14 04:56:03,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516024243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:56:03,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:56:03,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:56:03,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088046095] [2024-11-14 04:56:03,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:56:03,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:56:03,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:56:03,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:56:03,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:56:03,460 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:56:04,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:56:04,548 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2024-11-14 04:56:04,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:56:04,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-14 04:56:04,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:56:04,549 INFO L225 Difference]: With dead ends: 35 [2024-11-14 04:56:04,549 INFO L226 Difference]: Without dead ends: 22 [2024-11-14 04:56:04,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:56:04,550 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 28 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:56:04,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:56:04,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-14 04:56:04,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-14 04:56:04,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:56:04,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2024-11-14 04:56:04,558 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 15 [2024-11-14 04:56:04,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:56:04,559 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2024-11-14 04:56:04,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:56:04,559 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2024-11-14 04:56:04,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 04:56:04,560 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:56:04,560 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:56:04,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 04:56:04,561 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 04:56:04,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:56:04,562 INFO L85 PathProgramCache]: Analyzing trace with hash -107360551, now seen corresponding path program 5 times [2024-11-14 04:56:04,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:56:04,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517394783] [2024-11-14 04:56:04,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:56:04,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:56:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:56:07,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:56:07,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:56:07,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517394783] [2024-11-14 04:56:07,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517394783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:56:07,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:56:07,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:56:07,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620742471] [2024-11-14 04:56:07,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:56:07,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:56:07,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:56:07,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:56:07,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:56:07,540 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:56:08,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:56:08,216 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2024-11-14 04:56:08,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:56:08,217 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-14 04:56:08,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:56:08,218 INFO L225 Difference]: With dead ends: 29 [2024-11-14 04:56:08,219 INFO L226 Difference]: Without dead ends: 19 [2024-11-14 04:56:08,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:56:08,220 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 36 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:56:08,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 2 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:56:08,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-14 04:56:08,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-14 04:56:08,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:56:08,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-11-14 04:56:08,226 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2024-11-14 04:56:08,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:56:08,226 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-11-14 04:56:08,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:56:08,227 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-11-14 04:56:08,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 04:56:08,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:56:08,227 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:56:08,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 04:56:08,227 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-14 04:56:08,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:56:08,230 INFO L85 PathProgramCache]: Analyzing trace with hash 747946103, now seen corresponding path program 6 times [2024-11-14 04:56:08,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:56:08,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898335373] [2024-11-14 04:56:08,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:56:08,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:56:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:56:10,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:56:10,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:56:10,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898335373] [2024-11-14 04:56:10,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898335373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:56:10,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:56:10,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:56:10,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110230697] [2024-11-14 04:56:10,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:56:10,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:56:10,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:56:10,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:56:10,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:56:10,373 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:56:11,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:56:11,017 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2024-11-14 04:56:11,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:56:11,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-14 04:56:11,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:56:11,019 INFO L225 Difference]: With dead ends: 19 [2024-11-14 04:56:11,019 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 04:56:11,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:56:11,020 INFO L432 NwaCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:56:11,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:56:11,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 04:56:11,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 04:56:11,020 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) [2024-11-14 04:56:11,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 04:56:11,021 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2024-11-14 04:56:11,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:56:11,021 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 04:56:11,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:56:11,021 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 04:56:11,021 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 04:56:11,027 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-14 04:56:11,028 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-14 04:56:11,029 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-14 04:56:11,029 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-14 04:56:11,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 04:56:11,032 INFO L407 BasicCegarLoop]: Path program histogram: [6] [2024-11-14 04:56:11,036 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-14 04:56:11,036 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 04:56:11,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 04:56:11 BasicIcfg [2024-11-14 04:56:11,040 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 04:56:11,040 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 04:56:11,040 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 04:56:11,042 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 04:56:11,043 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:55:45" (3/4) ... [2024-11-14 04:56:11,045 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-14 04:56:11,048 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-14 04:56:11,049 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-14 04:56:11,049 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-14 04:56:11,054 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 89 nodes and edges [2024-11-14 04:56:11,054 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-14 04:56:11,055 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-14 04:56:11,055 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-14 04:56:11,148 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071e50a4-4ea7-4375-9a0d-13592bc84577/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 04:56:11,148 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071e50a4-4ea7-4375-9a0d-13592bc84577/bin/utaipan-verify-sOmjnqqW8E/witness.yml [2024-11-14 04:56:11,148 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 04:56:11,153 INFO L158 Benchmark]: Toolchain (without parser) took 27824.39ms. Allocated memory was 142.6MB in the beginning and 536.9MB in the end (delta: 394.3MB). Free memory was 119.4MB in the beginning and 197.3MB in the end (delta: -77.9MB). Peak memory consumption was 314.0MB. Max. memory is 16.1GB. [2024-11-14 04:56:11,153 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 142.6MB. Free memory is still 81.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:56:11,154 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.61ms. Allocated memory is still 142.6MB. Free memory was 119.1MB in the beginning and 107.2MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:56:11,154 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.75ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 105.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:56:11,154 INFO L158 Benchmark]: Boogie Preprocessor took 23.35ms. Allocated memory is still 142.6MB. Free memory was 105.1MB in the beginning and 103.8MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:56:11,154 INFO L158 Benchmark]: RCFGBuilder took 1415.51ms. Allocated memory is still 142.6MB. Free memory was 103.8MB in the beginning and 76.3MB in the end (delta: 27.5MB). Peak memory consumption was 64.1MB. Max. memory is 16.1GB. [2024-11-14 04:56:11,155 INFO L158 Benchmark]: TraceAbstraction took 25928.74ms. Allocated memory was 142.6MB in the beginning and 536.9MB in the end (delta: 394.3MB). Free memory was 75.6MB in the beginning and 205.6MB in the end (delta: -130.0MB). Peak memory consumption was 266.7MB. Max. memory is 16.1GB. [2024-11-14 04:56:11,155 INFO L158 Benchmark]: Witness Printer took 108.10ms. Allocated memory is still 536.9MB. Free memory was 201.6MB in the beginning and 197.3MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:56:11,160 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 142.6MB. Free memory is still 81.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.61ms. Allocated memory is still 142.6MB. Free memory was 119.1MB in the beginning and 107.2MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.75ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 105.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.35ms. Allocated memory is still 142.6MB. Free memory was 105.1MB in the beginning and 103.8MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1415.51ms. Allocated memory is still 142.6MB. Free memory was 103.8MB in the beginning and 76.3MB in the end (delta: 27.5MB). Peak memory consumption was 64.1MB. Max. memory is 16.1GB. * TraceAbstraction took 25928.74ms. Allocated memory was 142.6MB in the beginning and 536.9MB in the end (delta: 394.3MB). Free memory was 75.6MB in the beginning and 205.6MB in the end (delta: -130.0MB). Peak memory consumption was 266.7MB. Max. memory is 16.1GB. * Witness Printer took 108.10ms. Allocated memory is still 536.9MB. Free memory was 201.6MB in the beginning and 197.3MB in the end (delta: 4.3MB). 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: 84]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 29 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 25.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 172 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 172 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 348 IncrementalHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 5 mSDtfsCounter, 348 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 21 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 19.5s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 3950 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-14 04:56:11,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_071e50a4-4ea7-4375-9a0d-13592bc84577/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