./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/config/GemCutterReach.xml -i ../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 11:32:28,602 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 11:32:28,705 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-11-23 11:32:28,713 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 11:32:28,714 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 11:32:28,746 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 11:32:28,748 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 11:32:28,748 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 11:32:28,749 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 11:32:28,749 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 11:32:28,750 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 11:32:28,750 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 11:32:28,750 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 11:32:28,751 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 11:32:28,753 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 11:32:28,753 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 11:32:28,753 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 11:32:28,753 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 11:32:28,753 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 11:32:28,753 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 11:32:28,753 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 11:32:28,754 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 11:32:28,754 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 11:32:28,754 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 11:32:28,754 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 11:32:28,754 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 11:32:28,754 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 11:32:28,754 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 11:32:28,754 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 11:32:28,755 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 11:32:28,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-23 11:32:28,755 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 11:32:28,755 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 11:32:28,755 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 11:32:28,755 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2024-11-23 11:32:28,755 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 11:32:28,755 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 11:32:28,755 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-11-23 11:32:28,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 11:32:28,755 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 11:32:28,755 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-11-23 11:32:28,755 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-11-23 11:32:28,755 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-11-23 11:32:28,756 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca 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 -> GemCutter 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 -> ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d [2024-11-23 11:32:29,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 11:32:29,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 11:32:29,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 11:32:29,103 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 11:32:29,104 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 11:32:29,105 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2024-11-23 11:32:32,226 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/data/0ba20fbe0/cee3bd9a9f7b475c87b90408fec90f0b/FLAG514d84578 [2024-11-23 11:32:32,505 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 11:32:32,506 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2024-11-23 11:32:32,514 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/data/0ba20fbe0/cee3bd9a9f7b475c87b90408fec90f0b/FLAG514d84578 [2024-11-23 11:32:32,532 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/data/0ba20fbe0/cee3bd9a9f7b475c87b90408fec90f0b [2024-11-23 11:32:32,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 11:32:32,536 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 11:32:32,538 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 11:32:32,538 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 11:32:32,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 11:32:32,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:32:32" (1/1) ... [2024-11-23 11:32:32,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b11b38f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:32:32, skipping insertion in model container [2024-11-23 11:32:32,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:32:32" (1/1) ... [2024-11-23 11:32:32,566 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 11:32:32,798 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_096906a3-f607-4d8a-9b66-c158be29c66e/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c[3463,3476] [2024-11-23 11:32:32,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 11:32:32,821 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 11:32:32,854 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_096906a3-f607-4d8a-9b66-c158be29c66e/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c[3463,3476] [2024-11-23 11:32:32,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 11:32:32,872 INFO L204 MainTranslator]: Completed translation [2024-11-23 11:32:32,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:32:32 WrapperNode [2024-11-23 11:32:32,873 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 11:32:32,874 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 11:32:32,874 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 11:32:32,874 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 11:32:32,884 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:32:32" (1/1) ... [2024-11-23 11:32:32,893 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:32:32" (1/1) ... [2024-11-23 11:32:32,935 INFO L138 Inliner]: procedures = 24, calls = 40, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 234 [2024-11-23 11:32:32,937 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 11:32:32,937 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 11:32:32,938 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 11:32:32,938 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 11:32:32,947 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:32:32" (1/1) ... [2024-11-23 11:32:32,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:32:32" (1/1) ... [2024-11-23 11:32:32,956 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:32:32" (1/1) ... [2024-11-23 11:32:32,956 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:32:32" (1/1) ... [2024-11-23 11:32:32,977 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:32:32" (1/1) ... [2024-11-23 11:32:32,978 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:32:32" (1/1) ... [2024-11-23 11:32:32,987 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:32:32" (1/1) ... [2024-11-23 11:32:32,992 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:32:32" (1/1) ... [2024-11-23 11:32:32,994 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:32:32" (1/1) ... [2024-11-23 11:32:33,001 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 11:32:33,002 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 11:32:33,002 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 11:32:33,002 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 11:32:33,003 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:32:32" (1/1) ... [2024-11-23 11:32:33,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-23 11:32:33,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 [2024-11-23 11:32:33,042 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-23 11:32:33,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-23 11:32:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 11:32:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 11:32:33,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 11:32:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 11:32:33,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 11:32:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-23 11:32:33,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-23 11:32:33,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-23 11:32:33,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-23 11:32:33,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-23 11:32:33,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-23 11:32:33,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 11:32:33,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 11:32:33,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 11:32:33,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-23 11:32:33,070 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 11:32:33,184 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 11:32:33,186 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 11:32:33,764 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 11:32:33,764 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 11:32:34,241 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 11:32:34,242 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-23 11:32:34,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:32:34 BoogieIcfgContainer [2024-11-23 11:32:34,242 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 11:32:34,247 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 11:32:34,247 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 11:32:34,252 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 11:32:34,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:32:32" (1/3) ... [2024-11-23 11:32:34,253 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e49db75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:32:34, skipping insertion in model container [2024-11-23 11:32:34,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:32:32" (2/3) ... [2024-11-23 11:32:34,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e49db75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:32:34, skipping insertion in model container [2024-11-23 11:32:34,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:32:34" (3/3) ... [2024-11-23 11:32:34,256 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-horseshoe.wvr.c [2024-11-23 11:32:34,275 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 11:32:34,276 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-horseshoe.wvr.c that has 4 procedures, 36 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2024-11-23 11:32:34,277 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 11:32:34,351 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-23 11:32:34,423 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 11:32:34,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-11-23 11:32:34,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 [2024-11-23 11:32:34,428 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-11-23 11:32:34,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-11-23 11:32:34,531 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-11-23 11:32:34,553 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-11-23 11:32:34,563 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=PARTIAL_ORDER_FA, 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;@669d2ded, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 11:32:34,565 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-23 11:32:35,187 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)] === [2024-11-23 11:32:35,187 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-23 11:32:35,188 INFO L139 ounterexampleChecker]: Examining path program with hash 1379746497, occurence #1 [2024-11-23 11:32:35,188 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-23 11:32:35,188 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-23 11:32:35,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 11:32:35,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1134122956, now seen corresponding path program 1 times [2024-11-23 11:32:35,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 11:32:35,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982528893] [2024-11-23 11:32:35,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 11:32:35,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 11:32:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 11:32:35,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 11:32:35,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 11:32:35,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982528893] [2024-11-23 11:32:35,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982528893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 11:32:35,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 11:32:35,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 11:32:35,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964577949] [2024-11-23 11:32:35,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 11:32:35,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 11:32:35,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 11:32:35,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 11:32:35,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 11:32:35,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:35,493 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-23 11:32:35,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 11:32:35,495 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:35,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:35,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 11:32:35,628 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)] === [2024-11-23 11:32:35,628 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-23 11:32:35,628 INFO L139 ounterexampleChecker]: Examining path program with hash -950456012, occurence #1 [2024-11-23 11:32:35,628 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-23 11:32:35,628 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-23 11:32:35,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 11:32:35,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2009721955, now seen corresponding path program 1 times [2024-11-23 11:32:35,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 11:32:35,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186328405] [2024-11-23 11:32:35,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 11:32:35,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 11:32:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 11:32:36,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 11:32:36,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 11:32:36,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186328405] [2024-11-23 11:32:36,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186328405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 11:32:36,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 11:32:36,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 11:32:36,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006160518] [2024-11-23 11:32:36,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 11:32:36,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 11:32:36,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 11:32:36,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 11:32:36,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 11:32:36,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:36,195 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-23 11:32:36,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 11:32:36,195 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:36,195 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:36,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:36,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:32:36,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 11:32:36,349 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)] === [2024-11-23 11:32:36,349 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-23 11:32:36,349 INFO L139 ounterexampleChecker]: Examining path program with hash -950456012, occurence #2 [2024-11-23 11:32:36,349 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2024-11-23 11:32:36,349 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2024-11-23 11:32:36,350 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:32:36,350 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2024-11-23 11:32:36,370 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:36,371 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 7 [2024-11-23 11:32:36,371 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:36,371 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 10 [2024-11-23 11:32:36,371 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:36,371 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 19 [2024-11-23 11:32:36,371 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:32:36,371 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 23 [2024-11-23 11:32:36,371 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:32:36,371 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 28 [2024-11-23 11:32:36,371 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:36,371 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2024-11-23 11:32:36,371 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-23 11:32:36,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 11:32:36,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1431213629, now seen corresponding path program 1 times [2024-11-23 11:32:36,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 11:32:36,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888172689] [2024-11-23 11:32:36,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 11:32:36,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 11:32:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 11:32:36,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 11:32:36,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 11:32:36,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888172689] [2024-11-23 11:32:36,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888172689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 11:32:36,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 11:32:36,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 11:32:36,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602504508] [2024-11-23 11:32:36,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 11:32:36,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 11:32:36,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 11:32:36,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 11:32:36,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 11:32:36,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:36,691 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-23 11:32:36,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 11:32:36,692 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:36,693 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:32:36,693 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:36,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:36,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:32:36,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:36,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 11:32:36,831 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)] === [2024-11-23 11:32:36,831 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-23 11:32:36,832 INFO L139 ounterexampleChecker]: Examining path program with hash -950456012, occurence #3 [2024-11-23 11:32:36,832 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2024-11-23 11:32:36,832 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2024-11-23 11:32:36,832 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:32:36,832 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 5 [2024-11-23 11:32:36,832 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:36,832 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 8 [2024-11-23 11:32:36,832 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:36,832 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 11 [2024-11-23 11:32:36,832 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:36,832 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 20 [2024-11-23 11:32:36,832 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:32:36,833 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 24 [2024-11-23 11:32:36,833 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:32:36,833 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 29 [2024-11-23 11:32:36,833 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:36,833 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2024-11-23 11:32:36,833 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-23 11:32:36,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 11:32:36,834 INFO L85 PathProgramCache]: Analyzing trace with hash -933428863, now seen corresponding path program 1 times [2024-11-23 11:32:36,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 11:32:36,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885307683] [2024-11-23 11:32:36,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 11:32:36,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 11:32:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 11:32:37,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 11:32:37,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 11:32:37,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885307683] [2024-11-23 11:32:37,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885307683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 11:32:37,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095858432] [2024-11-23 11:32:37,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 11:32:37,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 11:32:37,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 [2024-11-23 11:32:37,195 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 11:32:37,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 11:32:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 11:32:37,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 11:32:37,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 11:32:37,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 11:32:37,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 11:32:37,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 11:32:37,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095858432] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 11:32:37,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 11:32:37,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 11:32:37,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850929685] [2024-11-23 11:32:37,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 11:32:37,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 11:32:37,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 11:32:37,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 11:32:37,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-23 11:32:37,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:37,757 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-23 11:32:37,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 11:32:37,757 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:37,757 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:32:37,757 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:37,757 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:37,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:37,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:32:37,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:37,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 11:32:37,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 11:32:38,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 11:32:38,154 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)] === [2024-11-23 11:32:38,155 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-23 11:32:38,155 INFO L139 ounterexampleChecker]: Examining path program with hash -950456012, occurence #4 [2024-11-23 11:32:38,155 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2024-11-23 11:32:38,155 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2024-11-23 11:32:38,155 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:32:38,155 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 6 [2024-11-23 11:32:38,156 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:38,156 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 9 [2024-11-23 11:32:38,156 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:38,156 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 12 [2024-11-23 11:32:38,156 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:38,156 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 21 [2024-11-23 11:32:38,156 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:32:38,156 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 25 [2024-11-23 11:32:38,157 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:32:38,157 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 30 [2024-11-23 11:32:38,157 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:38,157 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2024-11-23 11:32:38,157 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-23 11:32:38,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 11:32:38,158 INFO L85 PathProgramCache]: Analyzing trace with hash 962291239, now seen corresponding path program 2 times [2024-11-23 11:32:38,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 11:32:38,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146161291] [2024-11-23 11:32:38,158 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 11:32:38,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 11:32:38,220 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 11:32:38,220 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 11:32:38,382 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 11:32:38,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 11:32:38,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146161291] [2024-11-23 11:32:38,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146161291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 11:32:38,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 11:32:38,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 11:32:38,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155538092] [2024-11-23 11:32:38,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 11:32:38,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 11:32:38,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 11:32:38,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 11:32:38,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 11:32:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:38,385 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-23 11:32:38,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 11:32:38,386 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:38,386 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:32:38,386 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:38,386 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-11-23 11:32:38,386 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:38,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:38,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:32:38,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:38,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 11:32:38,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:38,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 11:32:38,556 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)] === [2024-11-23 11:32:38,556 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-23 11:32:38,557 INFO L139 ounterexampleChecker]: Examining path program with hash 626703777, occurence #1 [2024-11-23 11:32:38,557 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-23 11:32:38,557 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-23 11:32:38,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 11:32:38,557 INFO L85 PathProgramCache]: Analyzing trace with hash 50187429, now seen corresponding path program 1 times [2024-11-23 11:32:38,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 11:32:38,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774066362] [2024-11-23 11:32:38,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 11:32:38,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 11:32:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 11:32:38,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 11:32:38,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 11:32:38,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774066362] [2024-11-23 11:32:38,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774066362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 11:32:38,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407446094] [2024-11-23 11:32:38,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 11:32:38,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 11:32:38,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 [2024-11-23 11:32:38,925 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 11:32:38,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 11:32:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 11:32:39,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 11:32:39,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 11:32:39,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 11:32:39,218 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 11:32:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 11:32:39,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407446094] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 11:32:39,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 11:32:39,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 15 [2024-11-23 11:32:39,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109479533] [2024-11-23 11:32:39,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 11:32:39,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 11:32:39,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 11:32:39,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 11:32:39,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-23 11:32:39,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:39,469 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-23 11:32:39,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 15 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 11:32:39,470 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:39,470 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:32:39,470 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:39,470 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-11-23 11:32:39,470 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:39,470 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:39,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:39,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:32:39,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:39,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 11:32:39,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:39,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 11:32:39,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 11:32:40,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 11:32:40,092 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 1 more)] === [2024-11-23 11:32:40,092 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-23 11:32:40,092 INFO L139 ounterexampleChecker]: Examining path program with hash 626703777, occurence #2 [2024-11-23 11:32:40,092 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2024-11-23 11:32:40,092 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2024-11-23 11:32:40,092 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:32:40,092 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 8 [2024-11-23 11:32:40,093 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:40,093 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 11 [2024-11-23 11:32:40,093 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:40,093 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 14 [2024-11-23 11:32:40,093 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:40,093 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 26 [2024-11-23 11:32:40,093 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:32:40,093 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 34 [2024-11-23 11:32:40,093 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:32:40,093 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 39 [2024-11-23 11:32:40,093 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:40,093 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2024-11-23 11:32:40,093 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-23 11:32:40,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 11:32:40,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1637063031, now seen corresponding path program 2 times [2024-11-23 11:32:40,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 11:32:40,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001121165] [2024-11-23 11:32:40,094 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 11:32:40,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 11:32:40,165 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 11:32:40,165 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 11:32:40,443 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-23 11:32:40,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 11:32:40,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001121165] [2024-11-23 11:32:40,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001121165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 11:32:40,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 11:32:40,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 11:32:40,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168899300] [2024-11-23 11:32:40,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 11:32:40,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 11:32:40,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 11:32:40,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 11:32:40,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 11:32:40,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:40,447 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-23 11:32:40,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 11:32:40,447 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:40,447 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:32:40,447 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:40,447 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-11-23 11:32:40,447 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:40,447 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-11-23 11:32:40,447 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:40,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:40,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:32:40,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:40,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 11:32:40,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:40,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 11:32:40,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 11:32:40,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 11:32:40,756 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 1 more)] === [2024-11-23 11:32:40,756 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-23 11:32:40,756 INFO L139 ounterexampleChecker]: Examining path program with hash 144667076, occurence #1 [2024-11-23 11:32:40,756 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-23 11:32:40,756 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-23 11:32:40,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 11:32:40,757 INFO L85 PathProgramCache]: Analyzing trace with hash 181733799, now seen corresponding path program 3 times [2024-11-23 11:32:40,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 11:32:40,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512182805] [2024-11-23 11:32:40,757 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 11:32:40,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 11:32:40,837 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-23 11:32:40,838 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 11:32:41,355 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-23 11:32:41,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 11:32:41,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512182805] [2024-11-23 11:32:41,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512182805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 11:32:41,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 11:32:41,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 11:32:41,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051188472] [2024-11-23 11:32:41,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 11:32:41,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 11:32:41,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 11:32:41,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 11:32:41,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-23 11:32:41,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:41,357 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-23 11:32:41,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 11:32:41,357 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:41,357 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:32:41,357 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:41,357 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-11-23 11:32:41,357 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:41,357 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-11-23 11:32:41,357 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2024-11-23 11:32:41,358 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:41,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:41,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:32:41,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:41,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 11:32:41,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:41,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 11:32:41,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 11:32:41,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 11:32:41,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 11:32:41,740 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 11:32:41,740 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-23 11:32:41,741 INFO L139 ounterexampleChecker]: Examining path program with hash 144667076, occurence #2 [2024-11-23 11:32:41,741 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2024-11-23 11:32:41,741 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2024-11-23 11:32:41,741 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:32:41,741 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 8 [2024-11-23 11:32:41,741 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:41,741 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 11 [2024-11-23 11:32:41,741 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:41,742 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 14 [2024-11-23 11:32:41,742 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:41,742 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 36 [2024-11-23 11:32:41,742 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:32:41,742 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 40 [2024-11-23 11:32:41,742 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:32:41,742 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 43 [2024-11-23 11:32:41,743 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:32:41,743 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 45 [2024-11-23 11:32:41,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 11:32:41,798 INFO L85 PathProgramCache]: Analyzing trace with hash -443908753, now seen corresponding path program 1 times [2024-11-23 11:32:41,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SMTINTERPOL [2024-11-23 11:32:41,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55041449] [2024-11-23 11:32:41,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 11:32:41,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 11:32:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 11:32:41,977 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-23 11:32:41,977 INFO L136 FreeRefinementEngine]: Strategy SMTINTERPOL found an infeasible trace [2024-11-23 11:32:41,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55041449] [2024-11-23 11:32:41,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55041449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 11:32:41,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 11:32:41,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 11:32:41,980 INFO L172 ounterexampleChecker]: Successfully proved commutativity at non-minimality point 45. Constructing proof automaton... [2024-11-23 11:32:41,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 11:32:41,981 INFO L311 artialOrderCegarLoop]: Commutativity proof succeeded, skipping feasibility check. [2024-11-23 11:32:41,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 11:32:41,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SMTINTERPOL [2024-11-23 11:32:41,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 11:32:41,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-23 11:32:41,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:41,982 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-23 11:32:41,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 11:32:41,983 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:41,983 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:32:41,983 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:41,983 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-11-23 11:32:41,983 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:41,983 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-11-23 11:32:41,983 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2024-11-23 11:32:41,983 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2024-11-23 11:32:41,984 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:42,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:42,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:32:42,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:42,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 11:32:42,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:42,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 11:32:42,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 11:32:42,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 11:32:42,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:42,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 11:32:42,302 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 11:32:42,303 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-23 11:32:42,303 INFO L139 ounterexampleChecker]: Examining path program with hash -1774910342, occurence #1 [2024-11-23 11:32:42,303 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-23 11:32:42,303 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-23 11:32:42,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 11:32:42,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2002766041, now seen corresponding path program 1 times [2024-11-23 11:32:42,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 11:32:42,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418619535] [2024-11-23 11:32:42,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 11:32:42,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 11:32:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 11:32:42,631 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 11:32:42,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 11:32:42,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418619535] [2024-11-23 11:32:42,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418619535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 11:32:42,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010150859] [2024-11-23 11:32:42,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 11:32:42,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 11:32:42,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 [2024-11-23 11:32:42,634 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 11:32:42,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 11:32:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 11:32:42,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 11:32:42,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 11:32:43,068 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 11:32:43,069 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 11:32:43,325 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 11:32:43,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010150859] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 11:32:43,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 11:32:43,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-23 11:32:43,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126256454] [2024-11-23 11:32:43,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 11:32:43,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-23 11:32:43,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 11:32:43,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-23 11:32:43,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2024-11-23 11:32:43,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:43,330 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-23 11:32:43,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 11:32:43,331 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:43,331 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:32:43,331 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:43,331 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-11-23 11:32:43,331 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:43,331 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-11-23 11:32:43,331 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-11-23 11:32:43,332 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2024-11-23 11:32:43,332 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:43,332 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:43,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:43,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:32:43,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:43,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 11:32:43,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:43,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 11:32:43,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 11:32:43,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 11:32:43,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:43,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 11:32:43,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 11:32:43,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 11:32:43,903 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 11:32:43,904 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-23 11:32:43,904 INFO L139 ounterexampleChecker]: Examining path program with hash -1774910342, occurence #2 [2024-11-23 11:32:43,904 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2024-11-23 11:32:43,904 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2024-11-23 11:32:43,904 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:32:43,904 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 9 [2024-11-23 11:32:43,904 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:43,904 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 12 [2024-11-23 11:32:43,904 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:43,904 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 15 [2024-11-23 11:32:43,904 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:43,904 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 37 [2024-11-23 11:32:43,904 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:32:43,904 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 46 [2024-11-23 11:32:43,904 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:32:43,905 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 48 [2024-11-23 11:32:43,905 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:43,905 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2024-11-23 11:32:43,905 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-23 11:32:43,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 11:32:43,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1513874967, now seen corresponding path program 2 times [2024-11-23 11:32:43,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 11:32:43,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873653859] [2024-11-23 11:32:43,905 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 11:32:43,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 11:32:44,010 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 11:32:44,014 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 11:32:47,158 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 11:32:47,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 11:32:47,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873653859] [2024-11-23 11:32:47,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873653859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 11:32:47,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978173263] [2024-11-23 11:32:47,159 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 11:32:47,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 11:32:47,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 [2024-11-23 11:32:47,161 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 11:32:47,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 11:32:47,366 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 11:32:47,366 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 11:32:47,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-23 11:32:47,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 11:32:49,341 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 11:32:49,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 84 [2024-11-23 11:32:50,561 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 11:32:50,561 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 11:32:51,409 INFO L349 Elim1Store]: treesize reduction 4, result has 95.7 percent of original size [2024-11-23 11:32:51,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 101 [2024-11-23 11:32:54,175 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 11:32:54,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978173263] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 11:32:54,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 11:32:54,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 60 [2024-11-23 11:32:54,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547166025] [2024-11-23 11:32:54,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 11:32:54,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-23 11:32:54,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 11:32:54,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-23 11:32:54,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=3163, Unknown=0, NotChecked=0, Total=3660 [2024-11-23 11:32:54,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:54,181 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-23 11:32:54,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.3278688524590163) internal successors, (142), 60 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 11:32:54,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:54,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:32:54,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:54,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-11-23 11:32:54,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:54,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-11-23 11:32:54,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-11-23 11:32:54,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2024-11-23 11:32:54,183 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:54,183 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2024-11-23 11:32:54,183 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:56,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:56,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:32:56,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:56,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 11:32:56,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:56,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 11:32:56,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 11:32:56,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 11:32:56,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:56,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 11:32:56,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-23 11:32:56,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 11:32:56,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 11:32:56,337 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 11:32:56,337 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-23 11:32:56,338 INFO L139 ounterexampleChecker]: Examining path program with hash -1774910342, occurence #3 [2024-11-23 11:32:56,338 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2024-11-23 11:32:56,338 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2024-11-23 11:32:56,338 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:32:56,338 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 11 [2024-11-23 11:32:56,338 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:56,338 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 14 [2024-11-23 11:32:56,338 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:56,338 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 17 [2024-11-23 11:32:56,338 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:56,338 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 39 [2024-11-23 11:32:56,338 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:32:56,338 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 48 [2024-11-23 11:32:56,338 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:32:56,338 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 50 [2024-11-23 11:32:56,338 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:32:56,338 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2024-11-23 11:32:56,338 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-23 11:32:56,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 11:32:56,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1599392471, now seen corresponding path program 3 times [2024-11-23 11:32:56,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 11:32:56,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217544835] [2024-11-23 11:32:56,339 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 11:32:56,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 11:32:56,394 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 11:32:56,394 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 11:32:56,944 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-23 11:32:56,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 11:32:56,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217544835] [2024-11-23 11:32:56,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217544835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 11:32:56,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27733067] [2024-11-23 11:32:56,945 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 11:32:56,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 11:32:56,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 [2024-11-23 11:32:56,947 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 11:32:56,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 11:32:57,076 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 11:32:57,077 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 11:32:57,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 11:32:57,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 11:32:57,397 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 11:32:57,397 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 34 treesize of output 30 [2024-11-23 11:32:57,423 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 11:32:57,423 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 11:32:58,329 INFO L349 Elim1Store]: treesize reduction 4, result has 95.7 percent of original size [2024-11-23 11:32:58,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 101 [2024-11-23 11:32:59,002 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-23 11:32:59,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27733067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 11:32:59,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 11:32:59,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 23 [2024-11-23 11:32:59,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832248400] [2024-11-23 11:32:59,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 11:32:59,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-23 11:32:59,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 11:32:59,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-23 11:32:59,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2024-11-23 11:32:59,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:59,004 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-23 11:32:59,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.708333333333333) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 11:32:59,004 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:59,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:32:59,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:59,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-11-23 11:32:59,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:59,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-11-23 11:32:59,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2024-11-23 11:32:59,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2024-11-23 11:32:59,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:32:59,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2024-11-23 11:32:59,007 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2024-11-23 11:32:59,007 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:32:59,644 WARN L331 ript$VariableManager]: TermVariable v_~q1_front~0_112 not constructed by VariableManager. Cannot ensure absence of name clashes. [2024-11-23 11:32:59,645 WARN L331 ript$VariableManager]: TermVariable v_subst_2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2024-11-23 11:32:59,645 WARN L331 ript$VariableManager]: TermVariable v_subst_1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2024-11-23 11:32:59,645 WARN L331 ript$VariableManager]: TermVariable v_~q2_back~0_111 not constructed by VariableManager. Cannot ensure absence of name clashes. [2024-11-23 11:32:59,692 WARN L331 ript$VariableManager]: TermVariable v_subst_4 not constructed by VariableManager. Cannot ensure absence of name clashes. [2024-11-23 11:32:59,692 WARN L331 ript$VariableManager]: TermVariable v_subst_3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2024-11-23 11:32:59,692 WARN L331 ript$VariableManager]: TermVariable v_~q2_back~0_111 not constructed by VariableManager. Cannot ensure absence of name clashes. [2024-11-23 11:32:59,790 WARN L331 ript$VariableManager]: TermVariable v_subst_4 not constructed by VariableManager. Cannot ensure absence of name clashes. [2024-11-23 11:32:59,791 WARN L331 ript$VariableManager]: TermVariable v_subst_3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2024-11-23 11:32:59,791 WARN L331 ript$VariableManager]: TermVariable v_~q2_back~0_111 not constructed by VariableManager. Cannot ensure absence of name clashes. [2024-11-23 11:32:59,865 WARN L331 ript$VariableManager]: TermVariable v_subst_2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2024-11-23 11:32:59,866 WARN L331 ript$VariableManager]: TermVariable v_subst_1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2024-11-23 11:32:59,866 WARN L331 ript$VariableManager]: TermVariable v_~q2_back~0_111 not constructed by VariableManager. Cannot ensure absence of name clashes. [2024-11-23 11:33:00,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:33:00,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:33:00,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:33:00,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 11:33:00,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:33:00,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 11:33:00,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 11:33:00,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 11:33:00,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 11:33:00,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 11:33:00,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-23 11:33:00,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 11:33:00,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 11:33:00,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-23 11:33:00,326 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 11:33:00,326 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-23 11:33:00,327 INFO L139 ounterexampleChecker]: Examining path program with hash -1554690703, occurence #1 [2024-11-23 11:33:00,327 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-23 11:33:00,327 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-23 11:33:00,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 11:33:00,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1420585559, now seen corresponding path program 4 times [2024-11-23 11:33:00,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 11:33:00,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449006762] [2024-11-23 11:33:00,327 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 11:33:00,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 11:33:00,449 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 11:33:00,449 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 11:33:08,974 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 11:33:08,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 11:33:08,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449006762] [2024-11-23 11:33:08,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449006762] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 11:33:08,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815697271] [2024-11-23 11:33:08,975 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 11:33:08,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 11:33:08,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 [2024-11-23 11:33:08,977 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 11:33:08,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 11:33:09,114 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 11:33:09,114 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 11:33:09,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-23 11:33:09,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 11:33:09,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 11:33:13,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 11:33:13,852 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 11:33:13,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 11:33:13,855 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 11:33:13,934 INFO L349 Elim1Store]: treesize reduction 206, result has 29.9 percent of original size [2024-11-23 11:33:13,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 89 treesize of output 116 [2024-11-23 11:33:14,137 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 11:33:14,137 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 11:33:19,903 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 11:33:19,904 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 559 treesize of output 527 [2024-11-23 11:33:19,943 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 11:33:19,944 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 11:33:19,945 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 11:33:20,117 INFO L349 Elim1Store]: treesize reduction 5, result has 94.1 percent of original size [2024-11-23 11:33:20,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 3224 treesize of output 2057 [2024-11-23 11:33:34,660 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-23 11:34:00,388 INFO L349 Elim1Store]: treesize reduction 49, result has 93.8 percent of original size [2024-11-23 11:34:00,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 6442 treesize of output 4543 [2024-11-23 11:38:05,708 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-23 11:38:05,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2024-11-23 11:38:05,709 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-23 11:38:05,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-23 11:38:05,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-23 11:38:05,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2024-11-23 11:38:05,916 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:325) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.PartialOrderCegarLoop.isCounterexampleFeasible(PartialOrderCegarLoop.java:320) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:238) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 79 more [2024-11-23 11:38:05,923 INFO L158 Benchmark]: Toolchain (without parser) took 333386.68ms. Allocated memory was 117.4MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 92.2MB in the beginning and 494.8MB in the end (delta: -402.5MB). Peak memory consumption was 797.2MB. Max. memory is 16.1GB. [2024-11-23 11:38:05,923 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 117.4MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 11:38:05,923 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.93ms. Allocated memory is still 117.4MB. Free memory was 92.2MB in the beginning and 79.7MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-23 11:38:05,923 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.80ms. Allocated memory is still 117.4MB. Free memory was 79.5MB in the beginning and 77.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 11:38:05,924 INFO L158 Benchmark]: Boogie Preprocessor took 63.69ms. Allocated memory is still 117.4MB. Free memory was 77.5MB in the beginning and 76.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 11:38:05,924 INFO L158 Benchmark]: RCFGBuilder took 1240.85ms. Allocated memory is still 117.4MB. Free memory was 76.0MB in the beginning and 66.5MB in the end (delta: 9.5MB). Peak memory consumption was 46.7MB. Max. memory is 16.1GB. [2024-11-23 11:38:05,924 INFO L158 Benchmark]: TraceAbstraction took 331675.30ms. Allocated memory was 117.4MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 66.0MB in the beginning and 494.8MB in the end (delta: -428.8MB). Peak memory consumption was 767.2MB. Max. memory is 16.1GB. [2024-11-23 11:38:05,926 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 117.4MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 335.93ms. Allocated memory is still 117.4MB. Free memory was 92.2MB in the beginning and 79.7MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.80ms. Allocated memory is still 117.4MB. Free memory was 79.5MB in the beginning and 77.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 63.69ms. Allocated memory is still 117.4MB. Free memory was 77.5MB in the beginning and 76.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1240.85ms. Allocated memory is still 117.4MB. Free memory was 76.0MB in the beginning and 66.5MB in the end (delta: 9.5MB). Peak memory consumption was 46.7MB. Max. memory is 16.1GB. * TraceAbstraction took 331675.30ms. Allocated memory was 117.4MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 66.0MB in the beginning and 494.8MB in the end (delta: -428.8MB). Peak memory consumption was 767.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/config/GemCutterReach.xml -i ../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/config/svcomp-Reach-32bit-GemCutter_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 11:38:08,347 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 11:38:08,478 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/config/svcomp-Reach-32bit-GemCutter_Bitvector.epf [2024-11-23 11:38:08,486 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 11:38:08,487 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 11:38:08,529 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 11:38:08,531 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 11:38:08,532 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 11:38:08,532 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 11:38:08,532 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 11:38:08,534 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 11:38:08,534 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 11:38:08,534 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 11:38:08,534 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 11:38:08,534 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 11:38:08,534 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 11:38:08,534 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 11:38:08,535 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 11:38:08,535 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 11:38:08,535 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 11:38:08,535 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 11:38:08,535 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-23 11:38:08,535 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-23 11:38:08,535 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 11:38:08,535 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 11:38:08,535 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 11:38:08,535 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 11:38:08,535 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 11:38:08,535 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 11:38:08,535 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 11:38:08,536 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 11:38:08,536 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-23 11:38:08,536 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 11:38:08,537 INFO L153 SettingsManager]: * Refinement strategy for commutativity condition synthesis=FOX [2024-11-23 11:38:08,537 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 11:38:08,538 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 11:38:08,538 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2024-11-23 11:38:08,538 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 11:38:08,538 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-23 11:38:08,538 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-11-23 11:38:08,538 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-23 11:38:08,538 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 11:38:08,538 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-11-23 11:38:08,539 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-11-23 11:38:08,539 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-11-23 11:38:08,539 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca 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 -> GemCutter 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 -> ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d [2024-11-23 11:38:08,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 11:38:08,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 11:38:08,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 11:38:08,892 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 11:38:08,892 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 11:38:08,897 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2024-11-23 11:38:12,002 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/data/603d6fd31/0b3d859f50b8447abf8707b772fc9583/FLAG322cf3670 [2024-11-23 11:38:12,256 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 11:38:12,257 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2024-11-23 11:38:12,265 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/data/603d6fd31/0b3d859f50b8447abf8707b772fc9583/FLAG322cf3670 [2024-11-23 11:38:12,279 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/data/603d6fd31/0b3d859f50b8447abf8707b772fc9583 [2024-11-23 11:38:12,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 11:38:12,283 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 11:38:12,285 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 11:38:12,285 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 11:38:12,290 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 11:38:12,291 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:38:12" (1/1) ... [2024-11-23 11:38:12,292 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d540d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:12, skipping insertion in model container [2024-11-23 11:38:12,292 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:38:12" (1/1) ... [2024-11-23 11:38:12,311 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 11:38:12,551 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_096906a3-f607-4d8a-9b66-c158be29c66e/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c[3463,3476] [2024-11-23 11:38:12,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 11:38:12,588 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 11:38:12,630 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_096906a3-f607-4d8a-9b66-c158be29c66e/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c[3463,3476] [2024-11-23 11:38:12,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 11:38:12,662 INFO L204 MainTranslator]: Completed translation [2024-11-23 11:38:12,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:12 WrapperNode [2024-11-23 11:38:12,664 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 11:38:12,665 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 11:38:12,665 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 11:38:12,666 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 11:38:12,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:12" (1/1) ... [2024-11-23 11:38:12,686 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:12" (1/1) ... [2024-11-23 11:38:12,711 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 227 [2024-11-23 11:38:12,711 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 11:38:12,712 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 11:38:12,712 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 11:38:12,712 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 11:38:12,719 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:12" (1/1) ... [2024-11-23 11:38:12,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:12" (1/1) ... [2024-11-23 11:38:12,723 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:12" (1/1) ... [2024-11-23 11:38:12,723 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:12" (1/1) ... [2024-11-23 11:38:12,736 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:12" (1/1) ... [2024-11-23 11:38:12,741 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:12" (1/1) ... [2024-11-23 11:38:12,749 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:12" (1/1) ... [2024-11-23 11:38:12,751 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:12" (1/1) ... [2024-11-23 11:38:12,756 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:12" (1/1) ... [2024-11-23 11:38:12,759 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 11:38:12,763 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 11:38:12,764 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 11:38:12,764 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 11:38:12,765 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:12" (1/1) ... [2024-11-23 11:38:12,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-23 11:38:12,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 [2024-11-23 11:38:12,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-23 11:38:12,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-23 11:38:12,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 11:38:12,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-23 11:38:12,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-23 11:38:12,827 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 11:38:12,827 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 11:38:12,827 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 11:38:12,827 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 11:38:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-23 11:38:12,828 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-23 11:38:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-23 11:38:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-23 11:38:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 11:38:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 11:38:12,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 11:38:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-23 11:38:12,829 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 11:38:12,945 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 11:38:12,947 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 11:38:13,551 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 11:38:13,551 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 11:38:14,088 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 11:38:14,089 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-23 11:38:14,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:38:14 BoogieIcfgContainer [2024-11-23 11:38:14,090 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 11:38:14,093 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 11:38:14,093 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 11:38:14,099 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 11:38:14,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:38:12" (1/3) ... [2024-11-23 11:38:14,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6672374d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:38:14, skipping insertion in model container [2024-11-23 11:38:14,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:12" (2/3) ... [2024-11-23 11:38:14,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6672374d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:38:14, skipping insertion in model container [2024-11-23 11:38:14,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:38:14" (3/3) ... [2024-11-23 11:38:14,103 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-horseshoe.wvr.c [2024-11-23 11:38:14,121 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 11:38:14,124 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-horseshoe.wvr.c that has 4 procedures, 36 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2024-11-23 11:38:14,124 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 11:38:14,203 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-23 11:38:14,266 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 11:38:14,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-11-23 11:38:14,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 [2024-11-23 11:38:14,271 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-11-23 11:38:14,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-11-23 11:38:14,355 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-11-23 11:38:14,373 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-11-23 11:38:14,381 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=PARTIAL_ORDER_FA, 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;@5c7a802a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 11:38:14,381 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-23 11:38:15,197 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)] === [2024-11-23 11:38:15,197 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-23 11:38:15,198 INFO L139 ounterexampleChecker]: Examining path program with hash -1592845661, occurence #1 [2024-11-23 11:38:15,198 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-23 11:38:15,198 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-23 11:38:15,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 11:38:15,203 INFO L85 PathProgramCache]: Analyzing trace with hash 790588038, now seen corresponding path program 1 times [2024-11-23 11:38:15,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 11:38:15,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636227516] [2024-11-23 11:38:15,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 11:38:15,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 11:38:15,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 [2024-11-23 11:38:15,219 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 11:38:15,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 11:38:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 11:38:15,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 11:38:15,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 11:38:15,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 11:38:15,405 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 11:38:15,406 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 11:38:15,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636227516] [2024-11-23 11:38:15,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636227516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 11:38:15,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 11:38:15,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 11:38:15,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050103046] [2024-11-23 11:38:15,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 11:38:15,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 11:38:15,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 11:38:15,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 11:38:15,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 11:38:15,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:38:15,438 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-23 11:38:15,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 11:38:15,440 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:38:15,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:38:15,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 11:38:15,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 11:38:15,870 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)] === [2024-11-23 11:38:15,870 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-23 11:38:15,871 INFO L139 ounterexampleChecker]: Examining path program with hash 1736985507, occurence #1 [2024-11-23 11:38:15,871 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-23 11:38:15,871 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-23 11:38:15,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 11:38:15,872 INFO L85 PathProgramCache]: Analyzing trace with hash -733689707, now seen corresponding path program 1 times [2024-11-23 11:38:15,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 11:38:15,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [680627102] [2024-11-23 11:38:15,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 11:38:15,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 11:38:15,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 [2024-11-23 11:38:15,876 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 11:38:15,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 11:38:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 11:38:16,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 11:38:16,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 11:38:16,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 11:38:16,120 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 11:38:16,120 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 11:38:16,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680627102] [2024-11-23 11:38:16,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680627102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 11:38:16,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 11:38:16,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 11:38:16,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661684354] [2024-11-23 11:38:16,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 11:38:16,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 11:38:16,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 11:38:16,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 11:38:16,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 11:38:16,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:38:16,124 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-23 11:38:16,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 11:38:16,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:38:16,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:38:16,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:38:16,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:38:16,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 11:38:16,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 11:38:16,515 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)] === [2024-11-23 11:38:16,515 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-23 11:38:16,516 INFO L139 ounterexampleChecker]: Examining path program with hash 1736985507, occurence #2 [2024-11-23 11:38:16,516 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2024-11-23 11:38:16,516 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2024-11-23 11:38:16,517 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:38:16,517 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2024-11-23 11:38:16,538 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:38:16,538 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 7 [2024-11-23 11:38:16,538 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:38:16,539 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 10 [2024-11-23 11:38:16,539 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:38:16,539 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 19 [2024-11-23 11:38:16,539 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:38:16,539 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 23 [2024-11-23 11:38:16,539 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:38:16,539 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 28 [2024-11-23 11:38:16,539 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:38:16,539 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2024-11-23 11:38:16,539 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-23 11:38:16,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 11:38:16,540 INFO L85 PathProgramCache]: Analyzing trace with hash 351524525, now seen corresponding path program 1 times [2024-11-23 11:38:16,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 11:38:16,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800329373] [2024-11-23 11:38:16,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 11:38:16,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 11:38:16,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 [2024-11-23 11:38:16,544 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 11:38:16,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 11:38:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 11:38:16,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 11:38:16,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 11:38:16,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 11:38:16,802 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 11:38:16,802 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 11:38:16,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800329373] [2024-11-23 11:38:16,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800329373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 11:38:16,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 11:38:16,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 11:38:16,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618681630] [2024-11-23 11:38:16,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 11:38:16,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 11:38:16,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 11:38:16,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 11:38:16,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 11:38:16,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:38:16,805 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-23 11:38:16,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 11:38:16,806 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:38:16,806 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:38:16,806 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:38:16,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:38:16,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:38:16,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:38:16,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 11:38:17,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 11:38:17,169 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)] === [2024-11-23 11:38:17,169 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-23 11:38:17,170 INFO L139 ounterexampleChecker]: Examining path program with hash 1736985507, occurence #3 [2024-11-23 11:38:17,170 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2024-11-23 11:38:17,170 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2024-11-23 11:38:17,170 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:38:17,170 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 5 [2024-11-23 11:38:17,170 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:38:17,170 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 8 [2024-11-23 11:38:17,170 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:38:17,171 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 11 [2024-11-23 11:38:17,171 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:38:17,171 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 20 [2024-11-23 11:38:17,171 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:38:17,171 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 24 [2024-11-23 11:38:17,171 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:38:17,171 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 29 [2024-11-23 11:38:17,171 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:38:17,172 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2024-11-23 11:38:17,172 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-23 11:38:17,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 11:38:17,172 INFO L85 PathProgramCache]: Analyzing trace with hash -622676807, now seen corresponding path program 1 times [2024-11-23 11:38:17,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 11:38:17,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [458966997] [2024-11-23 11:38:17,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 11:38:17,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 11:38:17,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 [2024-11-23 11:38:17,175 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 11:38:17,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 11:38:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 11:38:17,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 11:38:17,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 11:38:17,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 11:38:17,554 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 11:38:17,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 11:38:17,924 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 11:38:17,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458966997] [2024-11-23 11:38:17,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458966997] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 11:38:17,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 11:38:17,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2024-11-23 11:38:17,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337511709] [2024-11-23 11:38:17,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 11:38:17,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 11:38:17,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 11:38:17,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 11:38:17,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-23 11:38:17,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:38:17,926 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-23 11:38:17,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 11:38:17,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:38:17,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:38:17,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:38:17,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:38:18,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 11:38:18,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:38:18,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 11:38:18,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 11:38:18,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 11:38:18,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 11:38:18,644 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)] === [2024-11-23 11:38:18,644 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-23 11:38:18,644 INFO L139 ounterexampleChecker]: Examining path program with hash 1736985507, occurence #4 [2024-11-23 11:38:18,644 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2024-11-23 11:38:18,644 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2024-11-23 11:38:18,644 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:38:18,644 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 6 [2024-11-23 11:38:18,644 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:38:18,644 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 9 [2024-11-23 11:38:18,644 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:38:18,644 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 12 [2024-11-23 11:38:18,644 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:38:18,645 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 21 [2024-11-23 11:38:18,645 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:38:18,645 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 25 [2024-11-23 11:38:18,645 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-23 11:38:18,645 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 30 [2024-11-23 11:38:18,645 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-23 11:38:18,645 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2024-11-23 11:38:18,645 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-23 11:38:18,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 11:38:18,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1408852783, now seen corresponding path program 2 times [2024-11-23 11:38:18,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 11:38:18,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023915490] [2024-11-23 11:38:18,646 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 11:38:18,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 11:38:18,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 [2024-11-23 11:38:18,649 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 11:38:18,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_096906a3-f607-4d8a-9b66-c158be29c66e/bin/ugemcutter-verify-Z6otQMs9Ca/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process