./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/config/GemCutterReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco --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 25cf9c0a16564c460f6e824f90a2df4185d2e5d2c682a221258efaf06dec8ca4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 06:20:27,470 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 06:20:27,551 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-11-27 06:20:27,562 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 06:20:27,563 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 06:20:27,601 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 06:20:27,602 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 06:20:27,602 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 06:20:27,602 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 06:20:27,603 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 06:20:27,603 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 06:20:27,604 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 06:20:27,605 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 06:20:27,605 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 06:20:27,605 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 06:20:27,605 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 06:20:27,605 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 06:20:27,605 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 06:20:27,607 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 06:20:27,607 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 06:20:27,607 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 06:20:27,607 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 06:20:27,607 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 06:20:27,607 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 06:20:27,608 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 06:20:27,608 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 06:20:27,608 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 06:20:27,609 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 06:20:27,609 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 06:20:27,609 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 06:20:27,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-27 06:20:27,609 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 06:20:27,610 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 06:20:27,610 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 06:20:27,610 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2024-11-27 06:20:27,611 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 06:20:27,611 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 06:20:27,611 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-11-27 06:20:27,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 06:20:27,611 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 06:20:27,611 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-11-27 06:20:27,612 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-11-27 06:20:27,612 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-11-27 06:20:27,612 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_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco 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 -> 25cf9c0a16564c460f6e824f90a2df4185d2e5d2c682a221258efaf06dec8ca4 [2024-11-27 06:20:27,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 06:20:27,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 06:20:27,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 06:20:27,969 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 06:20:27,969 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 06:20:27,970 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2024-11-27 06:20:30,989 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/data/bcd9aec47/e9ceceff754b4b1dae91336479cb7660/FLAG0cb8a14e6 [2024-11-27 06:20:31,239 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 06:20:31,240 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2024-11-27 06:20:31,247 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/data/bcd9aec47/e9ceceff754b4b1dae91336479cb7660/FLAG0cb8a14e6 [2024-11-27 06:20:31,262 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/data/bcd9aec47/e9ceceff754b4b1dae91336479cb7660 [2024-11-27 06:20:31,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 06:20:31,267 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 06:20:31,268 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 06:20:31,268 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 06:20:31,273 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 06:20:31,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 06:20:31" (1/1) ... [2024-11-27 06:20:31,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@279c6473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:31, skipping insertion in model container [2024-11-27 06:20:31,275 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 06:20:31" (1/1) ... [2024-11-27 06:20:31,293 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 06:20:31,514 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_94014ca8-6aa9-422b-adbc-1b4eccc82df7/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c[2625,2638] [2024-11-27 06:20:31,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 06:20:31,541 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 06:20:31,575 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_94014ca8-6aa9-422b-adbc-1b4eccc82df7/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c[2625,2638] [2024-11-27 06:20:31,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 06:20:31,600 INFO L204 MainTranslator]: Completed translation [2024-11-27 06:20:31,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:31 WrapperNode [2024-11-27 06:20:31,602 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 06:20:31,604 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 06:20:31,604 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 06:20:31,604 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 06:20:31,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:31" (1/1) ... [2024-11-27 06:20:31,624 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:31" (1/1) ... [2024-11-27 06:20:31,650 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 86 [2024-11-27 06:20:31,652 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 06:20:31,653 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 06:20:31,653 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 06:20:31,653 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 06:20:31,662 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:31" (1/1) ... [2024-11-27 06:20:31,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:31" (1/1) ... [2024-11-27 06:20:31,669 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:31" (1/1) ... [2024-11-27 06:20:31,673 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:31" (1/1) ... [2024-11-27 06:20:31,682 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:31" (1/1) ... [2024-11-27 06:20:31,683 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:31" (1/1) ... [2024-11-27 06:20:31,687 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:31" (1/1) ... [2024-11-27 06:20:31,688 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:31" (1/1) ... [2024-11-27 06:20:31,689 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:31" (1/1) ... [2024-11-27 06:20:31,691 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 06:20:31,692 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 06:20:31,693 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 06:20:31,693 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 06:20:31,694 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:31" (1/1) ... [2024-11-27 06:20:31,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-27 06:20:31,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/z3 [2024-11-27 06:20:31,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-27 06:20:31,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-27 06:20:31,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 06:20:31,758 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-27 06:20:31,758 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-27 06:20:31,758 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-27 06:20:31,758 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-27 06:20:31,758 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-27 06:20:31,758 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-27 06:20:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-27 06:20:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-27 06:20:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-27 06:20:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-27 06:20:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 06:20:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 06:20:31,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 06:20:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-27 06:20:31,760 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 06:20:31,863 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 06:20:31,866 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 06:20:32,163 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 06:20:32,163 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 06:20:32,503 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 06:20:32,504 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-27 06:20:32,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 06:20:32 BoogieIcfgContainer [2024-11-27 06:20:32,504 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 06:20:32,507 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 06:20:32,508 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 06:20:32,521 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 06:20:32,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 06:20:31" (1/3) ... [2024-11-27 06:20:32,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a326453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 06:20:32, skipping insertion in model container [2024-11-27 06:20:32,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:20:31" (2/3) ... [2024-11-27 06:20:32,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a326453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 06:20:32, skipping insertion in model container [2024-11-27 06:20:32,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 06:20:32" (3/3) ... [2024-11-27 06:20:32,523 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array-hom.wvr.c [2024-11-27 06:20:32,543 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 06:20:32,547 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-max-array-hom.wvr.c that has 4 procedures, 30 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-27 06:20:32,547 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 06:20:32,641 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-27 06:20:32,711 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 06:20:32,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-11-27 06:20:32,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/z3 [2024-11-27 06:20:32,715 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-11-27 06:20:32,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-11-27 06:20:32,808 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-11-27 06:20:32,829 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-11-27 06:20:32,837 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;@6ae3a0a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 06:20:32,837 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-27 06:20:33,251 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)] === [2024-11-27 06:20:33,251 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-27 06:20:33,252 INFO L139 ounterexampleChecker]: Examining path program with hash 1547257672, occurence #1 [2024-11-27 06:20:33,252 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-27 06:20:33,252 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-27 06:20:33,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 06:20:33,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1228551148, now seen corresponding path program 1 times [2024-11-27 06:20:33,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 06:20:33,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655980618] [2024-11-27 06:20:33,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 06:20:33,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 06:20:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 06:20:33,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 06:20:33,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 06:20:33,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655980618] [2024-11-27 06:20:33,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655980618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 06:20:33,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 06:20:33,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 06:20:33,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256061378] [2024-11-27 06:20:33,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 06:20:33,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 06:20:33,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 06:20:33,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 06:20:33,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 06:20:33,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 06:20:33,903 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-27 06:20:33,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 06:20:33,905 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-27 06:20:34,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 06:20:34,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 06:20:34,025 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)] === [2024-11-27 06:20:34,026 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-27 06:20:34,026 INFO L139 ounterexampleChecker]: Examining path program with hash 1547257672, occurence #2 [2024-11-27 06:20:34,026 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2024-11-27 06:20:34,026 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2024-11-27 06:20:34,027 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-27 06:20:34,028 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 3 [2024-11-27 06:20:34,051 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-27 06:20:34,052 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 6 [2024-11-27 06:20:34,052 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-27 06:20:34,052 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 9 [2024-11-27 06:20:34,052 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-27 06:20:34,052 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 24 [2024-11-27 06:20:34,052 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-27 06:20:34,052 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2024-11-27 06:20:34,052 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-27 06:20:34,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 06:20:34,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1431523822, now seen corresponding path program 1 times [2024-11-27 06:20:34,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 06:20:34,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082037781] [2024-11-27 06:20:34,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 06:20:34,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 06:20:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 06:20:34,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 06:20:34,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 06:20:34,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082037781] [2024-11-27 06:20:34,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082037781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 06:20:34,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762707265] [2024-11-27 06:20:34,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 06:20:34,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 06:20:34,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/z3 [2024-11-27 06:20:34,372 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 06:20:34,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 06:20:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 06:20:34,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 06:20:34,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 06:20:34,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 06:20:34,679 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 06:20:34,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 06:20:34,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762707265] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 06:20:34,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 06:20:34,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2024-11-27 06:20:34,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838778253] [2024-11-27 06:20:34,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 06:20:34,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 06:20:34,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 06:20:34,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 06:20:34,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-27 06:20:34,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 06:20:34,811 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-27 06:20:34,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 14 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 06:20:34,812 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-27 06:20:34,812 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-27 06:20:35,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 06:20:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 06:20:35,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 06:20:35,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 06:20:35,325 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)] === [2024-11-27 06:20:35,325 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-27 06:20:35,325 INFO L139 ounterexampleChecker]: Examining path program with hash 1547257672, occurence #3 [2024-11-27 06:20:35,325 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2024-11-27 06:20:35,325 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2024-11-27 06:20:35,325 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-27 06:20:35,325 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2024-11-27 06:20:35,325 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-27 06:20:35,325 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 7 [2024-11-27 06:20:35,325 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-27 06:20:35,325 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 10 [2024-11-27 06:20:35,326 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-27 06:20:35,326 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 25 [2024-11-27 06:20:35,326 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-27 06:20:35,326 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2024-11-27 06:20:35,326 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-27 06:20:35,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 06:20:35,327 INFO L85 PathProgramCache]: Analyzing trace with hash 866257876, now seen corresponding path program 2 times [2024-11-27 06:20:35,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 06:20:35,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395196400] [2024-11-27 06:20:35,327 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 06:20:35,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 06:20:35,352 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 06:20:35,352 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 06:20:35,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 06:20:35,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 06:20:35,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395196400] [2024-11-27 06:20:35,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395196400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 06:20:35,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 06:20:35,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 06:20:35,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24097805] [2024-11-27 06:20:35,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 06:20:35,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 06:20:35,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 06:20:35,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 06:20:35,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 06:20:35,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 06:20:35,437 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-27 06:20:35,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 06:20:35,437 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-27 06:20:35,437 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-27 06:20:35,437 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-27 06:20:35,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 06:20:35,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 06:20:35,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 06:20:35,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 06:20:35,558 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)] === [2024-11-27 06:20:35,559 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-27 06:20:35,559 INFO L139 ounterexampleChecker]: Examining path program with hash -710540626, occurence #1 [2024-11-27 06:20:35,559 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-27 06:20:35,560 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-27 06:20:35,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 06:20:35,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1558752, now seen corresponding path program 1 times [2024-11-27 06:20:35,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 06:20:35,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581013960] [2024-11-27 06:20:35,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 06:20:35,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 06:20:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 06:20:35,908 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 06:20:35,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 06:20:35,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581013960] [2024-11-27 06:20:35,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581013960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 06:20:35,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263704206] [2024-11-27 06:20:35,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 06:20:35,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 06:20:35,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/z3 [2024-11-27 06:20:35,911 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 06:20:35,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 06:20:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 06:20:36,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 06:20:36,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 06:20:36,359 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 06:20:36,360 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 06:20:36,541 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 06:20:36,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263704206] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 06:20:36,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 06:20:36,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-11-27 06:20:36,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474244820] [2024-11-27 06:20:36,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 06:20:36,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 06:20:36,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 06:20:36,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 06:20:36,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2024-11-27 06:20:36,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 06:20:36,544 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-27 06:20:36,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.523809523809524) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 06:20:36,544 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-27 06:20:36,544 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-27 06:20:36,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-11-27 06:20:36,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-27 06:20:36,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 06:20:36,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 06:20:36,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 06:20:36,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 06:20:36,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 06:20:36,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 06:20:36,944 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)] === [2024-11-27 06:20:36,945 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-27 06:20:36,945 INFO L139 ounterexampleChecker]: Examining path program with hash -710540626, occurence #2 [2024-11-27 06:20:36,945 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2024-11-27 06:20:36,945 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2024-11-27 06:20:36,945 INFO L209 ounterexampleChecker]: No commutativity condition found. [2024-11-27 06:20:36,945 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 5 [2024-11-27 06:20:36,945 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-27 06:20:36,945 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 8 [2024-11-27 06:20:36,945 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-27 06:20:36,945 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 11 [2024-11-27 06:20:36,945 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-27 06:20:36,946 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 35 [2024-11-27 06:20:36,946 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-11-27 06:20:36,946 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2024-11-27 06:20:36,946 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-27 06:20:36,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 06:20:36,946 INFO L85 PathProgramCache]: Analyzing trace with hash -2065905054, now seen corresponding path program 2 times [2024-11-27 06:20:36,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 06:20:36,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710066214] [2024-11-27 06:20:36,946 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 06:20:36,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 06:20:37,119 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 06:20:37,120 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 06:20:43,359 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 06:20:43,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 06:20:43,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710066214] [2024-11-27 06:20:43,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710066214] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 06:20:43,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140149457] [2024-11-27 06:20:43,361 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 06:20:43,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 06:20:43,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/z3 [2024-11-27 06:20:43,364 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 06:20:43,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94014ca8-6aa9-422b-adbc-1b4eccc82df7/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 06:20:43,478 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 06:20:43,478 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 06:20:43,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-27 06:20:43,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 06:20:43,692 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 [2024-11-27 06:20:46,715 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 06:20:46,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 222 treesize of output 118 [2024-11-27 06:20:47,386 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 06:20:47,387 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 06:22:08,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3238 treesize of output 2900 [2024-11-27 06:22:57,940 WARN L286 SmtUtils]: Spent 49.08s on a formula simplification that was a NOOP. DAG size: 2037 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-27 06:22:57,942 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 06:22:57,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 32 select indices, 32 select index equivalence classes, 0 disjoint index pairs (out of 496 index pairs), introduced 32 new quantified variables, introduced 496 case distinctions, treesize of input 4438 treesize of output 7354 [2024-11-27 06:23:04,025 WARN L286 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 2678 DAG size of output: 2647 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)