./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.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_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:51:21,395 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:51:21,485 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:51:21,490 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:51:21,490 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:51:21,530 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:51:21,532 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:51:21,532 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:51:21,533 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:51:21,533 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:51:21,534 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:51:21,534 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:51:21,534 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:51:21,535 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:51:21,535 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:51:21,536 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:51:21,536 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:51:21,536 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:51:21,536 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:51:21,536 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:51:21,536 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:51:21,536 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:51:21,537 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:51:21,537 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:51:21,537 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:51:21,537 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:51:21,537 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:51:21,538 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:51:21,538 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:51:21,538 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:51:21,538 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:51:21,538 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:51:21,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:51:21,539 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:51:21,539 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:51:21,539 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:51:21,540 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:51:21,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:51:21,540 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:51:21,540 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:51:21,540 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:51:21,541 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:51:21,541 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd 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 -> Automizer 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 -> b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 [2024-11-13 15:51:21,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:51:21,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:51:21,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:51:21,858 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:51:21,859 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:51:21,860 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c Unable to find full path for "g++" [2024-11-13 15:51:23,699 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:51:23,976 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:51:23,977 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2024-11-13 15:51:23,984 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/data/403d0d227/343de36920954edd8e891f7749b3a664/FLAG9f5bafd06 [2024-11-13 15:51:23,999 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/data/403d0d227/343de36920954edd8e891f7749b3a664 [2024-11-13 15:51:24,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:51:24,002 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:51:24,003 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:51:24,003 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:51:24,007 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:51:24,008 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:51:24" (1/1) ... [2024-11-13 15:51:24,009 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79bb1de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:51:24, skipping insertion in model container [2024-11-13 15:51:24,009 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:51:24" (1/1) ... [2024-11-13 15:51:24,032 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:51:24,260 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_705edd75-dbaf-4e92-a984-2ba24c56260b/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c[3694,3707] [2024-11-13 15:51:24,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:51:24,289 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:51:24,327 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_705edd75-dbaf-4e92-a984-2ba24c56260b/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c[3694,3707] [2024-11-13 15:51:24,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:51:24,356 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:51:24,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:51:24 WrapperNode [2024-11-13 15:51:24,357 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:51:24,358 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:51:24,359 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:51:24,359 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:51:24,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:51:24" (1/1) ... [2024-11-13 15:51:24,374 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:51:24" (1/1) ... [2024-11-13 15:51:24,416 INFO L138 Inliner]: procedures = 26, calls = 48, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 290 [2024-11-13 15:51:24,417 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:51:24,417 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:51:24,417 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:51:24,417 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:51:24,426 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:51:24" (1/1) ... [2024-11-13 15:51:24,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:51:24" (1/1) ... [2024-11-13 15:51:24,432 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:51:24" (1/1) ... [2024-11-13 15:51:24,456 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-13 15:51:24,456 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:51:24" (1/1) ... [2024-11-13 15:51:24,456 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:51:24" (1/1) ... [2024-11-13 15:51:24,467 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:51:24" (1/1) ... [2024-11-13 15:51:24,472 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:51:24" (1/1) ... [2024-11-13 15:51:24,474 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:51:24" (1/1) ... [2024-11-13 15:51:24,475 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:51:24" (1/1) ... [2024-11-13 15:51:24,478 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:51:24,478 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:51:24,479 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:51:24,479 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:51:24,480 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:51:24" (1/1) ... [2024-11-13 15:51:24,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:51:24,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:51:24,509 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:51:24,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:51:24,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:51:24,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 15:51:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 15:51:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 15:51:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 15:51:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 15:51:24,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 15:51:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 15:51:24,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 15:51:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-13 15:51:24,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-13 15:51:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-13 15:51:24,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-13 15:51:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:51:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:51:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 15:51:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 15:51:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 15:51:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:51:24,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:51:24,544 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 15:51:24,683 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:51:24,685 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:51:25,161 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:51:25,161 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:51:25,638 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:51:25,639 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-13 15:51:25,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:51:25 BoogieIcfgContainer [2024-11-13 15:51:25,639 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:51:25,642 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:51:25,642 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:51:25,646 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:51:25,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:51:24" (1/3) ... [2024-11-13 15:51:25,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33266994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:51:25, skipping insertion in model container [2024-11-13 15:51:25,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:51:24" (2/3) ... [2024-11-13 15:51:25,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33266994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:51:25, skipping insertion in model container [2024-11-13 15:51:25,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:51:25" (3/3) ... [2024-11-13 15:51:25,648 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2024-11-13 15:51:25,664 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:51:25,665 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-parallel-sum-1.wvr.c that has 5 procedures, 46 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2024-11-13 15:51:25,666 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 15:51:25,757 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-13 15:51:25,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 54 transitions, 136 flow [2024-11-13 15:51:25,832 INFO L124 PetriNetUnfolderBase]: 9/50 cut-off events. [2024-11-13 15:51:25,834 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-13 15:51:25,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 50 events. 9/50 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-13 15:51:25,839 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 54 transitions, 136 flow [2024-11-13 15:51:25,842 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 49 transitions, 122 flow [2024-11-13 15:51:25,852 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:51:25,864 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=PETRI_NET, 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;@5eba2690, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:51:25,864 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-13 15:51:25,887 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:51:25,887 INFO L124 PetriNetUnfolderBase]: 9/48 cut-off events. [2024-11-13 15:51:25,887 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-13 15:51:25,887 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:51:25,888 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:51:25,888 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 2 more)] === [2024-11-13 15:51:25,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:51:25,893 INFO L85 PathProgramCache]: Analyzing trace with hash -819516936, now seen corresponding path program 1 times [2024-11-13 15:51:25,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:51:25,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105053896] [2024-11-13 15:51:25,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:51:25,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:51:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:26,149 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 15:51:26,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:51:26,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105053896] [2024-11-13 15:51:26,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105053896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:51:26,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:51:26,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:51:26,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719669701] [2024-11-13 15:51:26,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:51:26,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 15:51:26,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:51:26,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 15:51:26,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 15:51:26,195 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-13 15:51:26,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 122 flow. Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 15:51:26,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:51:26,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-13 15:51:26,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:51:29,593 INFO L124 PetriNetUnfolderBase]: 19797/25801 cut-off events. [2024-11-13 15:51:29,594 INFO L125 PetriNetUnfolderBase]: For 1319/1319 co-relation queries the response was YES. [2024-11-13 15:51:29,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52712 conditions, 25801 events. 19797/25801 cut-off events. For 1319/1319 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 129566 event pairs, 16578 based on Foata normal form. 0/22450 useless extension candidates. Maximal degree in co-relation 49225. Up to 25706 conditions per place. [2024-11-13 15:51:29,868 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 40 selfloop transitions, 0 changer transitions 0/45 dead transitions. [2024-11-13 15:51:29,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 194 flow [2024-11-13 15:51:29,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 15:51:29,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 15:51:29,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 62 transitions. [2024-11-13 15:51:29,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-11-13 15:51:29,893 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 122 flow. Second operand 2 states and 62 transitions. [2024-11-13 15:51:29,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 194 flow [2024-11-13 15:51:29,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 178 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-13 15:51:29,986 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 98 flow [2024-11-13 15:51:29,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=98, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2024-11-13 15:51:29,994 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -7 predicate places. [2024-11-13 15:51:29,996 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 98 flow [2024-11-13 15:51:29,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 15:51:29,996 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:51:29,997 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:51:29,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:51:29,997 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 2 more)] === [2024-11-13 15:51:29,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:51:29,999 INFO L85 PathProgramCache]: Analyzing trace with hash -966766884, now seen corresponding path program 1 times [2024-11-13 15:51:29,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:51:30,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245092222] [2024-11-13 15:51:30,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:51:30,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:51:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:30,366 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 15:51:30,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:51:30,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245092222] [2024-11-13 15:51:30,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245092222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:51:30,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:51:30,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:51:30,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3262317] [2024-11-13 15:51:30,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:51:30,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:51:30,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:51:30,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:51:30,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:51:30,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-13 15:51:30,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:51:30,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:51:30,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-13 15:51:30,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:51:33,706 INFO L124 PetriNetUnfolderBase]: 31442/40888 cut-off events. [2024-11-13 15:51:33,707 INFO L125 PetriNetUnfolderBase]: For 564/564 co-relation queries the response was YES. [2024-11-13 15:51:33,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82350 conditions, 40888 events. 31442/40888 cut-off events. For 564/564 co-relation queries the response was YES. Maximal size of possible extension queue 1484. Compared 222608 event pairs, 9215 based on Foata normal form. 1/35408 useless extension candidates. Maximal degree in co-relation 82347. Up to 28277 conditions per place. [2024-11-13 15:51:33,883 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 69 selfloop transitions, 5 changer transitions 1/80 dead transitions. [2024-11-13 15:51:33,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 80 transitions, 325 flow [2024-11-13 15:51:33,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:51:33,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:51:33,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-13 15:51:33,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6358024691358025 [2024-11-13 15:51:33,887 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 98 flow. Second operand 3 states and 103 transitions. [2024-11-13 15:51:33,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 80 transitions, 325 flow [2024-11-13 15:51:33,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 80 transitions, 325 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 15:51:33,893 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 131 flow [2024-11-13 15:51:33,893 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2024-11-13 15:51:33,893 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -4 predicate places. [2024-11-13 15:51:33,894 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 131 flow [2024-11-13 15:51:33,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:51:33,895 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:51:33,895 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:51:33,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:51:33,896 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 2 more)] === [2024-11-13 15:51:33,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:51:33,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1541281564, now seen corresponding path program 1 times [2024-11-13 15:51:33,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:51:33,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28510527] [2024-11-13 15:51:33,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:51:33,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:51:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:34,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:51:34,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:51:34,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28510527] [2024-11-13 15:51:34,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28510527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:51:34,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:51:34,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:51:34,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892170985] [2024-11-13 15:51:34,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:51:34,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:51:34,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:51:34,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:51:34,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:51:34,316 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-13 15:51:34,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:51:34,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:51:34,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-13 15:51:34,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:51:38,577 INFO L124 PetriNetUnfolderBase]: 47784/63010 cut-off events. [2024-11-13 15:51:38,577 INFO L125 PetriNetUnfolderBase]: For 5397/5397 co-relation queries the response was YES. [2024-11-13 15:51:38,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136710 conditions, 63010 events. 47784/63010 cut-off events. For 5397/5397 co-relation queries the response was YES. Maximal size of possible extension queue 2331. Compared 366422 event pairs, 40360 based on Foata normal form. 2001/55771 useless extension candidates. Maximal degree in co-relation 136705. Up to 40409 conditions per place. [2024-11-13 15:51:38,789 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 43 selfloop transitions, 2 changer transitions 35/85 dead transitions. [2024-11-13 15:51:38,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 85 transitions, 384 flow [2024-11-13 15:51:38,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:51:38,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:51:38,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-11-13 15:51:38,791 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-11-13 15:51:38,791 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 131 flow. Second operand 4 states and 113 transitions. [2024-11-13 15:51:38,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 85 transitions, 384 flow [2024-11-13 15:51:38,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 85 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:51:38,795 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 144 flow [2024-11-13 15:51:38,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2024-11-13 15:51:38,796 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-11-13 15:51:38,796 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 144 flow [2024-11-13 15:51:38,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:51:38,796 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:51:38,796 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:51:38,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:51:38,797 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 2 more)] === [2024-11-13 15:51:38,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:51:38,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1040153029, now seen corresponding path program 1 times [2024-11-13 15:51:38,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:51:38,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715060287] [2024-11-13 15:51:38,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:51:38,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:51:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:39,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:51:39,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:51:39,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715060287] [2024-11-13 15:51:39,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715060287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:51:39,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190613804] [2024-11-13 15:51:39,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:51:39,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:51:39,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:51:39,085 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:51:39,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:51:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:39,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:51:39,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:51:39,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:51:39,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:51:39,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:51:39,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190613804] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:51:39,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:51:39,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-13 15:51:39,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962714273] [2024-11-13 15:51:39,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:51:39,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:51:39,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:51:39,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:51:39,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:51:39,477 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-13 15:51:39,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 144 flow. Second operand has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 15:51:39,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:51:39,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-13 15:51:39,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:51:43,274 INFO L124 PetriNetUnfolderBase]: 47144/62039 cut-off events. [2024-11-13 15:51:43,275 INFO L125 PetriNetUnfolderBase]: For 6153/6153 co-relation queries the response was YES. [2024-11-13 15:51:43,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135879 conditions, 62039 events. 47144/62039 cut-off events. For 6153/6153 co-relation queries the response was YES. Maximal size of possible extension queue 2239. Compared 357349 event pairs, 39870 based on Foata normal form. 2026/55109 useless extension candidates. Maximal degree in co-relation 135872. Up to 40408 conditions per place. [2024-11-13 15:51:43,561 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 75 selfloop transitions, 5 changer transitions 2/87 dead transitions. [2024-11-13 15:51:43,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 87 transitions, 412 flow [2024-11-13 15:51:43,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:51:43,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:51:43,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-11-13 15:51:43,563 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-11-13 15:51:43,563 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 144 flow. Second operand 6 states and 132 transitions. [2024-11-13 15:51:43,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 87 transitions, 412 flow [2024-11-13 15:51:43,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 87 transitions, 404 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-13 15:51:43,577 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 179 flow [2024-11-13 15:51:43,577 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-11-13 15:51:43,578 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2024-11-13 15:51:43,578 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 179 flow [2024-11-13 15:51:43,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 15:51:43,578 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:51:43,579 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:51:43,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 15:51:43,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:51:43,779 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 2 more)] === [2024-11-13 15:51:43,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:51:43,780 INFO L85 PathProgramCache]: Analyzing trace with hash -132653585, now seen corresponding path program 1 times [2024-11-13 15:51:43,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:51:43,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992977437] [2024-11-13 15:51:43,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:51:43,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:51:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:44,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:51:44,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:51:44,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992977437] [2024-11-13 15:51:44,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992977437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:51:44,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381161867] [2024-11-13 15:51:44,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:51:44,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:51:44,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:51:44,111 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:51:44,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:51:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:44,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:51:44,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:51:44,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:51:44,522 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:51:44,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:51:44,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381161867] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:51:44,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:51:44,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-13 15:51:44,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862343894] [2024-11-13 15:51:44,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:51:44,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:51:44,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:51:44,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:51:44,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:51:44,656 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-13 15:51:44,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 179 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 15:51:44,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:51:44,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-13 15:51:44,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:51:47,885 INFO L124 PetriNetUnfolderBase]: 35526/46756 cut-off events. [2024-11-13 15:51:47,885 INFO L125 PetriNetUnfolderBase]: For 7614/7614 co-relation queries the response was YES. [2024-11-13 15:51:47,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104724 conditions, 46756 events. 35526/46756 cut-off events. For 7614/7614 co-relation queries the response was YES. Maximal size of possible extension queue 1645. Compared 259932 event pairs, 29704 based on Foata normal form. 611/40737 useless extension candidates. Maximal degree in co-relation 104715. Up to 40408 conditions per place. [2024-11-13 15:51:48,092 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 42 selfloop transitions, 4 changer transitions 29/80 dead transitions. [2024-11-13 15:51:48,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 80 transitions, 387 flow [2024-11-13 15:51:48,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:51:48,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:51:48,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-11-13 15:51:48,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39197530864197533 [2024-11-13 15:51:48,094 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 179 flow. Second operand 6 states and 127 transitions. [2024-11-13 15:51:48,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 80 transitions, 387 flow [2024-11-13 15:51:48,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 80 transitions, 376 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-13 15:51:48,114 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 166 flow [2024-11-13 15:51:48,114 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=166, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2024-11-13 15:51:48,115 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2024-11-13 15:51:48,115 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 166 flow [2024-11-13 15:51:48,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 15:51:48,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:51:48,115 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:51:48,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:51:48,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:51:48,316 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 2 more)] === [2024-11-13 15:51:48,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:51:48,316 INFO L85 PathProgramCache]: Analyzing trace with hash 886680048, now seen corresponding path program 2 times [2024-11-13 15:51:48,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:51:48,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353303840] [2024-11-13 15:51:48,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:51:48,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:51:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:48,564 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 15:51:48,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:51:48,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353303840] [2024-11-13 15:51:48,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353303840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:51:48,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:51:48,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:51:48,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854175531] [2024-11-13 15:51:48,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:51:48,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:51:48,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:51:48,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:51:48,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:51:48,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-13 15:51:48,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 15:51:48,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:51:48,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-13 15:51:48,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:51:54,577 INFO L124 PetriNetUnfolderBase]: 70326/91180 cut-off events. [2024-11-13 15:51:54,578 INFO L125 PetriNetUnfolderBase]: For 23861/23861 co-relation queries the response was YES. [2024-11-13 15:51:54,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213117 conditions, 91180 events. 70326/91180 cut-off events. For 23861/23861 co-relation queries the response was YES. Maximal size of possible extension queue 3021. Compared 533174 event pairs, 19769 based on Foata normal form. 1/79427 useless extension candidates. Maximal degree in co-relation 213106. Up to 31389 conditions per place. [2024-11-13 15:51:54,922 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 112 selfloop transitions, 8 changer transitions 1/126 dead transitions. [2024-11-13 15:51:54,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 126 transitions, 632 flow [2024-11-13 15:51:54,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:51:54,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:51:54,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2024-11-13 15:51:54,924 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-13 15:51:54,924 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 166 flow. Second operand 4 states and 144 transitions. [2024-11-13 15:51:54,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 126 transitions, 632 flow [2024-11-13 15:51:54,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 126 transitions, 608 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-13 15:51:54,935 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 226 flow [2024-11-13 15:51:54,935 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-11-13 15:51:54,936 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2024-11-13 15:51:54,936 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 226 flow [2024-11-13 15:51:54,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 15:51:54,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:51:54,937 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:51:54,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 15:51:54,937 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-13 15:51:54,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:51:54,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1438353222, now seen corresponding path program 1 times [2024-11-13 15:51:54,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:51:54,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846036134] [2024-11-13 15:51:54,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:51:54,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:51:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:55,137 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:51:55,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:51:55,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846036134] [2024-11-13 15:51:55,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846036134] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:51:55,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096045736] [2024-11-13 15:51:55,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:51:55,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:51:55,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:51:55,140 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:51:55,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:51:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:55,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:51:55,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:51:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 15:51:55,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:51:55,642 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 15:51:55,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096045736] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:51:55,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:51:55,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2024-11-13 15:51:55,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588868073] [2024-11-13 15:51:55,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:51:55,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:51:55,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:51:55,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:51:55,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:51:55,646 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-13 15:51:55,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 226 flow. Second operand has 10 states, 10 states have (on average 18.4) internal successors, (184), 10 states have internal predecessors, (184), 0 states have call successors, (0), 0 states 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 15:51:55,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:51:55,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-13 15:51:55,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:52:06,563 INFO L124 PetriNetUnfolderBase]: 125786/163023 cut-off events. [2024-11-13 15:52:06,563 INFO L125 PetriNetUnfolderBase]: For 72935/72935 co-relation queries the response was YES. [2024-11-13 15:52:06,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397388 conditions, 163023 events. 125786/163023 cut-off events. For 72935/72935 co-relation queries the response was YES. Maximal size of possible extension queue 4823. Compared 983942 event pairs, 8295 based on Foata normal form. 2/141514 useless extension candidates. Maximal degree in co-relation 397377. Up to 80037 conditions per place. [2024-11-13 15:52:07,544 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 187 selfloop transitions, 22 changer transitions 10/224 dead transitions. [2024-11-13 15:52:07,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 224 transitions, 1169 flow [2024-11-13 15:52:07,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:52:07,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 15:52:07,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 299 transitions. [2024-11-13 15:52:07,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5033670033670034 [2024-11-13 15:52:07,546 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 226 flow. Second operand 11 states and 299 transitions. [2024-11-13 15:52:07,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 224 transitions, 1169 flow [2024-11-13 15:52:09,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 224 transitions, 1109 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-11-13 15:52:09,009 INFO L231 Difference]: Finished difference. Result has 76 places, 75 transitions, 399 flow [2024-11-13 15:52:09,010 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=399, PETRI_PLACES=76, PETRI_TRANSITIONS=75} [2024-11-13 15:52:09,010 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 23 predicate places. [2024-11-13 15:52:09,010 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 399 flow [2024-11-13 15:52:09,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.4) internal successors, (184), 10 states have internal predecessors, (184), 0 states have call successors, (0), 0 states 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 15:52:09,010 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:52:09,011 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:52:09,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:52:09,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:09,216 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-13 15:52:09,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:52:09,216 INFO L85 PathProgramCache]: Analyzing trace with hash -77303018, now seen corresponding path program 1 times [2024-11-13 15:52:09,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:52:09,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099283433] [2024-11-13 15:52:09,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:52:09,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:52:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:10,321 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:52:10,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:52:10,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099283433] [2024-11-13 15:52:10,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099283433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:52:10,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750672122] [2024-11-13 15:52:10,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:52:10,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:10,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:52:10,323 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:52:10,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_705edd75-dbaf-4e92-a984-2ba24c56260b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:52:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:10,459 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 15:52:10,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:52:10,821 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:52:10,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2024-11-13 15:52:10,923 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:52:10,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:52:11,153 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 15:52:11,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750672122] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:52:11,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:52:11,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 20 [2024-11-13 15:52:11,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856112914] [2024-11-13 15:52:11,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:52:11,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 15:52:11,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:52:11,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 15:52:11,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:52:11,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-13 15:52:11,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 399 flow. Second operand has 20 states, 20 states have (on average 14.4) internal successors, (288), 20 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:52:11,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:52:11,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-13 15:52:11,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand