./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i --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_6b5b3f70-28e8-4d5f-ba67-dcb1abd2905c/bin/ugemcutter-verify-L2ppAeDwQX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5b3f70-28e8-4d5f-ba67-dcb1abd2905c/bin/ugemcutter-verify-L2ppAeDwQX/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5b3f70-28e8-4d5f-ba67-dcb1abd2905c/bin/ugemcutter-verify-L2ppAeDwQX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5b3f70-28e8-4d5f-ba67-dcb1abd2905c/bin/ugemcutter-verify-L2ppAeDwQX/config/GemCutterReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5b3f70-28e8-4d5f-ba67-dcb1abd2905c/bin/ugemcutter-verify-L2ppAeDwQX/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5b3f70-28e8-4d5f-ba67-dcb1abd2905c/bin/ugemcutter-verify-L2ppAeDwQX --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 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-05 08:25:02,208 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-05 08:25:02,263 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5b3f70-28e8-4d5f-ba67-dcb1abd2905c/bin/ugemcutter-verify-L2ppAeDwQX/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-12-05 08:25:02,267 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-05 08:25:02,268 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-05 08:25:02,287 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-05 08:25:02,287 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-05 08:25:02,288 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-05 08:25:02,288 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-05 08:25:02,288 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-05 08:25:02,288 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-05 08:25:02,288 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-05 08:25:02,289 INFO L153 SettingsManager]: * Use SBE=true [2024-12-05 08:25:02,289 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-05 08:25:02,289 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-05 08:25:02,289 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-05 08:25:02,289 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-05 08:25:02,289 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-05 08:25:02,289 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-05 08:25:02,289 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-05 08:25:02,289 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-05 08:25:02,290 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-05 08:25:02,290 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-05 08:25:02,290 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-05 08:25:02,290 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-05 08:25:02,290 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-05 08:25:02,290 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-05 08:25:02,290 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-05 08:25:02,290 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-05 08:25:02,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-05 08:25:02,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-12-05 08:25:02,291 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-05 08:25:02,291 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-05 08:25:02,291 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-05 08:25:02,291 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2024-12-05 08:25:02,291 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-05 08:25:02,291 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-05 08:25:02,291 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-12-05 08:25:02,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-05 08:25:02,291 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-05 08:25:02,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-12-05 08:25:02,292 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-12-05 08:25:02,292 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-12-05 08:25:02,292 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_6b5b3f70-28e8-4d5f-ba67-dcb1abd2905c/bin/ugemcutter-verify-L2ppAeDwQX 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 -> 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b [2024-12-05 08:25:02,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-05 08:25:02,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-05 08:25:02,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-05 08:25:02,539 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-05 08:25:02,539 INFO L274 PluginConnector]: CDTParser initialized [2024-12-05 08:25:02,540 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5b3f70-28e8-4d5f-ba67-dcb1abd2905c/bin/ugemcutter-verify-L2ppAeDwQX/../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2024-12-05 08:25:05,213 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5b3f70-28e8-4d5f-ba67-dcb1abd2905c/bin/ugemcutter-verify-L2ppAeDwQX/data/4b65a9669/66628b53f6f44d8f997780100e471351/FLAGa525ead3a [2024-12-05 08:25:05,454 INFO L384 CDTParser]: Found 1 translation units. [2024-12-05 08:25:05,455 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5b3f70-28e8-4d5f-ba67-dcb1abd2905c/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2024-12-05 08:25:05,470 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5b3f70-28e8-4d5f-ba67-dcb1abd2905c/bin/ugemcutter-verify-L2ppAeDwQX/data/4b65a9669/66628b53f6f44d8f997780100e471351/FLAGa525ead3a [2024-12-05 08:25:05,484 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5b3f70-28e8-4d5f-ba67-dcb1abd2905c/bin/ugemcutter-verify-L2ppAeDwQX/data/4b65a9669/66628b53f6f44d8f997780100e471351 [2024-12-05 08:25:05,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-05 08:25:05,488 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-05 08:25:05,490 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-05 08:25:05,490 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-05 08:25:05,494 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-05 08:25:05,495 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:25:05" (1/1) ... [2024-12-05 08:25:05,495 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63ff97b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:05, skipping insertion in model container [2024-12-05 08:25:05,496 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:25:05" (1/1) ... [2024-12-05 08:25:05,522 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-05 08:25:05,774 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_6b5b3f70-28e8-4d5f-ba67-dcb1abd2905c/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i[30176,30189] [2024-12-05 08:25:05,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 08:25:05,815 INFO L200 MainTranslator]: Completed pre-run [2024-12-05 08:25:05,848 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_6b5b3f70-28e8-4d5f-ba67-dcb1abd2905c/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i[30176,30189] [2024-12-05 08:25:05,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 08:25:05,892 INFO L204 MainTranslator]: Completed translation [2024-12-05 08:25:05,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:05 WrapperNode [2024-12-05 08:25:05,893 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-05 08:25:05,894 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-05 08:25:05,894 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-05 08:25:05,894 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-05 08:25:05,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:05" (1/1) ... [2024-12-05 08:25:05,911 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:05" (1/1) ... [2024-12-05 08:25:05,934 INFO L138 Inliner]: procedures = 173, calls = 41, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 256 [2024-12-05 08:25:05,934 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-05 08:25:05,935 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-05 08:25:05,935 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-05 08:25:05,935 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-05 08:25:05,942 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:05" (1/1) ... [2024-12-05 08:25:05,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:05" (1/1) ... [2024-12-05 08:25:05,945 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:05" (1/1) ... [2024-12-05 08:25:05,946 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:05" (1/1) ... [2024-12-05 08:25:05,954 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:05" (1/1) ... [2024-12-05 08:25:05,956 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:05" (1/1) ... [2024-12-05 08:25:05,960 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:05" (1/1) ... [2024-12-05 08:25:05,962 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:05" (1/1) ... [2024-12-05 08:25:05,964 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:05" (1/1) ... [2024-12-05 08:25:05,966 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-05 08:25:05,967 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-05 08:25:05,967 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-05 08:25:05,967 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-05 08:25:05,968 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:05" (1/1) ... [2024-12-05 08:25:05,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-12-05 08:25:05,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5b3f70-28e8-4d5f-ba67-dcb1abd2905c/bin/ugemcutter-verify-L2ppAeDwQX/z3 [2024-12-05 08:25:05,994 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5b3f70-28e8-4d5f-ba67-dcb1abd2905c/bin/ugemcutter-verify-L2ppAeDwQX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-12-05 08:25:05,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5b3f70-28e8-4d5f-ba67-dcb1abd2905c/bin/ugemcutter-verify-L2ppAeDwQX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-12-05 08:25:06,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-12-05 08:25:06,014 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-12-05 08:25:06,014 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-12-05 08:25:06,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-05 08:25:06,014 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-05 08:25:06,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-05 08:25:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-05 08:25:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-12-05 08:25:06,015 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-12-05 08:25:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-05 08:25:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-05 08:25:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-05 08:25:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-05 08:25:06,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-05 08:25:06,017 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-05 08:25:06,133 INFO L234 CfgBuilder]: Building ICFG [2024-12-05 08:25:06,135 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-05 08:25:06,449 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-05 08:25:06,449 INFO L283 CfgBuilder]: Performing block encoding [2024-12-05 08:25:06,851 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-05 08:25:06,851 INFO L312 CfgBuilder]: Removed 14 assume(true) statements. [2024-12-05 08:25:06,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:25:06 BoogieIcfgContainer [2024-12-05 08:25:06,852 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-05 08:25:06,854 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-05 08:25:06,854 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-05 08:25:06,858 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-05 08:25:06,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 08:25:05" (1/3) ... [2024-12-05 08:25:06,859 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d06f757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:25:06, skipping insertion in model container [2024-12-05 08:25:06,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:25:05" (2/3) ... [2024-12-05 08:25:06,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d06f757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:25:06, skipping insertion in model container [2024-12-05 08:25:06,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:25:06" (3/3) ... [2024-12-05 08:25:06,861 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2024-12-05 08:25:06,877 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-05 08:25:06,878 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_04-munge_racefree.i that has 3 procedures, 74 locations, 1 initial locations, 14 loop locations, and 2 error locations. [2024-12-05 08:25:06,878 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-05 08:25:06,935 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-12-05 08:25:06,984 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-05 08:25:06,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-12-05 08:25:06,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5b3f70-28e8-4d5f-ba67-dcb1abd2905c/bin/ugemcutter-verify-L2ppAeDwQX/z3 [2024-12-05 08:25:06,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5b3f70-28e8-4d5f-ba67-dcb1abd2905c/bin/ugemcutter-verify-L2ppAeDwQX/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-12-05 08:25:06,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b5b3f70-28e8-4d5f-ba67-dcb1abd2905c/bin/ugemcutter-verify-L2ppAeDwQX/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-12-05 08:25:07,065 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-12-05 08:25:07,083 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t2_funThread1of1ForFork1 ======== [2024-12-05 08:25:07,091 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;@a890433, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-05 08:25:07,091 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-05 08:25:07,479 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-05 08:25:07,480 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-12-05 08:25:07,480 INFO L139 ounterexampleChecker]: Examining path program with hash 47155743, occurence #1 [2024-12-05 08:25:07,480 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-12-05 08:25:07,480 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-12-05 08:25:07,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 08:25:07,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1298371300, now seen corresponding path program 1 times [2024-12-05 08:25:07,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-05 08:25:07,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409252900] [2024-12-05 08:25:07,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-05 08:25:07,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 08:25:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 08:25:07,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 08:25:07,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-05 08:25:07,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409252900] [2024-12-05 08:25:07,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409252900] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-05 08:25:07,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-05 08:25:07,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-05 08:25:07,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689481853] [2024-12-05 08:25:07,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-05 08:25:07,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-05 08:25:07,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-05 08:25:07,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-05 08:25:07,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-05 08:25:07,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:07,754 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-12-05 08:25:07,755 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) [2024-12-05 08:25:07,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:09,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:09,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-05 08:25:09,308 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-05 08:25:09,308 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-12-05 08:25:09,308 INFO L139 ounterexampleChecker]: Examining path program with hash 791239391, occurence #1 [2024-12-05 08:25:09,308 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-12-05 08:25:09,308 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-12-05 08:25:09,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 08:25:09,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1453553870, now seen corresponding path program 1 times [2024-12-05 08:25:09,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-05 08:25:09,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885153095] [2024-12-05 08:25:09,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-05 08:25:09,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 08:25:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 08:25:09,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 08:25:09,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-05 08:25:09,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885153095] [2024-12-05 08:25:09,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885153095] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-05 08:25:09,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-05 08:25:09,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-05 08:25:09,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569213087] [2024-12-05 08:25:09,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-05 08:25:09,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-05 08:25:09,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-05 08:25:09,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-05 08:25:09,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-05 08:25:09,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:09,526 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-12-05 08:25:09,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-12-05 08:25:09,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:09,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:09,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:09,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-05 08:25:09,838 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-05 08:25:09,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-05 08:25:09,845 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-12-05 08:25:09,846 INFO L319 ceAbstractionStarter]: Result for error location t2_funThread1of1ForFork1 was SAFE (1/3) [2024-12-05 08:25:09,851 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-05 08:25:09,852 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-12-05 08:25:09,852 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t1_funThread1of1ForFork0 ======== [2024-12-05 08:25:09,853 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;@a890433, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-05 08:25:09,853 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-05 08:25:09,865 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-05 08:25:09,865 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-12-05 08:25:09,865 INFO L139 ounterexampleChecker]: Examining path program with hash 1899211691, occurence #1 [2024-12-05 08:25:09,865 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-12-05 08:25:09,865 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-12-05 08:25:09,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 08:25:09,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1373787283, now seen corresponding path program 1 times [2024-12-05 08:25:09,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-05 08:25:09,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266409589] [2024-12-05 08:25:09,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-05 08:25:09,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 08:25:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 08:25:09,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 08:25:09,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-05 08:25:09,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266409589] [2024-12-05 08:25:09,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266409589] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-05 08:25:09,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-05 08:25:09,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-05 08:25:09,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959696441] [2024-12-05 08:25:09,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-05 08:25:09,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-05 08:25:09,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-05 08:25:09,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-05 08:25:09,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-05 08:25:09,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:09,942 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-12-05 08:25:09,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2024-12-05 08:25:09,943 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:11,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:11,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-05 08:25:11,071 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-05 08:25:11,071 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-12-05 08:25:11,071 INFO L139 ounterexampleChecker]: Examining path program with hash 208293831, occurence #1 [2024-12-05 08:25:11,071 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-12-05 08:25:11,071 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-12-05 08:25:11,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 08:25:11,072 INFO L85 PathProgramCache]: Analyzing trace with hash 2054842439, now seen corresponding path program 1 times [2024-12-05 08:25:11,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-05 08:25:11,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733055463] [2024-12-05 08:25:11,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-05 08:25:11,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 08:25:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 08:25:11,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 08:25:11,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-05 08:25:11,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733055463] [2024-12-05 08:25:11,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733055463] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-05 08:25:11,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-05 08:25:11,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-05 08:25:11,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800373069] [2024-12-05 08:25:11,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-05 08:25:11,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-05 08:25:11,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-05 08:25:11,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-05 08:25:11,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-05 08:25:11,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:11,190 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-12-05 08:25:11,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-05 08:25:11,190 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:11,190 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:11,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:11,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-05 08:25:11,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-05 08:25:11,743 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-05 08:25:11,743 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-12-05 08:25:11,743 INFO L139 ounterexampleChecker]: Examining path program with hash -640681393, occurence #1 [2024-12-05 08:25:11,743 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-12-05 08:25:11,743 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-12-05 08:25:11,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 08:25:11,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1115159697, now seen corresponding path program 1 times [2024-12-05 08:25:11,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-05 08:25:11,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625083492] [2024-12-05 08:25:11,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-05 08:25:11,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 08:25:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 08:25:11,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 08:25:11,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-05 08:25:11,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625083492] [2024-12-05 08:25:11,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625083492] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-05 08:25:11,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-05 08:25:11,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-05 08:25:11,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161500684] [2024-12-05 08:25:11,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-05 08:25:11,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-05 08:25:11,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-05 08:25:11,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-05 08:25:11,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-05 08:25:11,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:11,835 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-12-05 08:25:11,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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) [2024-12-05 08:25:11,835 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:11,835 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-12-05 08:25:11,835 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:11,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:11,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-05 08:25:11,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-05 08:25:11,892 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-05 08:25:11,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-05 08:25:11,894 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-12-05 08:25:11,894 INFO L319 ceAbstractionStarter]: Result for error location t1_funThread1of1ForFork0 was SAFE (2/3) [2024-12-05 08:25:11,897 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-05 08:25:11,897 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-12-05 08:25:11,898 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-12-05 08:25:11,898 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;@a890433, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-05 08:25:11,898 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-05 08:25:11,902 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-12-05 08:25:11,902 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-12-05 08:25:11,902 INFO L139 ounterexampleChecker]: Examining path program with hash 505499967, occurence #1 [2024-12-05 08:25:11,902 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-12-05 08:25:11,902 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-12-05 08:25:11,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 08:25:11,903 INFO L85 PathProgramCache]: Analyzing trace with hash -885144876, now seen corresponding path program 1 times [2024-12-05 08:25:11,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-05 08:25:11,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856199196] [2024-12-05 08:25:11,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-05 08:25:11,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 08:25:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 08:25:11,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 08:25:11,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-05 08:25:11,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856199196] [2024-12-05 08:25:11,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856199196] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-05 08:25:11,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-05 08:25:11,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-05 08:25:11,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155344015] [2024-12-05 08:25:11,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-05 08:25:11,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-05 08:25:11,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-05 08:25:11,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-05 08:25:11,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-05 08:25:11,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:11,942 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-12-05 08:25:11,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-12-05 08:25:11,942 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:11,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:11,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-05 08:25:11,957 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-12-05 08:25:11,957 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-12-05 08:25:11,957 INFO L139 ounterexampleChecker]: Examining path program with hash 11205755, occurence #1 [2024-12-05 08:25:11,957 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-12-05 08:25:11,957 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-12-05 08:25:11,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 08:25:11,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1691093797, now seen corresponding path program 1 times [2024-12-05 08:25:11,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-05 08:25:11,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678856836] [2024-12-05 08:25:11,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-05 08:25:11,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 08:25:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 08:25:11,991 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-05 08:25:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 08:25:12,024 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-05 08:25:12,025 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-05 08:25:12,025 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-12-05 08:25:12,025 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-12-05 08:25:12,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-05 08:25:12,026 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-12-05 08:25:12,026 INFO L319 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (3/3) [2024-12-05 08:25:12,027 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-05 08:25:12,027 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-12-05 08:25:12,063 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-12-05 08:25:12,066 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-05 08:25:12,082 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-12-05 08:25:12,082 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t2_funThread1of2ForFork1 ======== [2024-12-05 08:25:12,083 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;@a890433, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-05 08:25:12,083 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-05 08:25:13,221 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-05 08:25:13,221 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-12-05 08:25:13,221 INFO L139 ounterexampleChecker]: Examining path program with hash 766662325, occurence #1 [2024-12-05 08:25:13,221 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-12-05 08:25:13,221 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-12-05 08:25:13,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 08:25:13,222 INFO L85 PathProgramCache]: Analyzing trace with hash 214945596, now seen corresponding path program 1 times [2024-12-05 08:25:13,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-05 08:25:13,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968223006] [2024-12-05 08:25:13,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-05 08:25:13,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 08:25:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 08:25:13,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 08:25:13,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-05 08:25:13,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968223006] [2024-12-05 08:25:13,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968223006] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-05 08:25:13,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-05 08:25:13,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-05 08:25:13,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489491330] [2024-12-05 08:25:13,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-05 08:25:13,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-05 08:25:13,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-05 08:25:13,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-05 08:25:13,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-05 08:25:13,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:13,282 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-12-05 08:25:13,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 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) [2024-12-05 08:25:13,282 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:25,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:25,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-05 08:25:25,469 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-05 08:25:25,469 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-12-05 08:25:25,469 INFO L139 ounterexampleChecker]: Examining path program with hash -829300799, occurence #1 [2024-12-05 08:25:25,469 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-12-05 08:25:25,469 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-12-05 08:25:25,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 08:25:25,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1910358501, now seen corresponding path program 1 times [2024-12-05 08:25:25,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-05 08:25:25,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850102303] [2024-12-05 08:25:25,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-05 08:25:25,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 08:25:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 08:25:25,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 08:25:25,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-05 08:25:25,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850102303] [2024-12-05 08:25:25,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850102303] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-05 08:25:25,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-05 08:25:25,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-05 08:25:25,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247426796] [2024-12-05 08:25:25,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-05 08:25:25,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-05 08:25:25,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-05 08:25:25,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-05 08:25:25,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-05 08:25:25,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:25,746 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-12-05 08:25:25,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2024-12-05 08:25:25,746 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:25,746 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:38,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:38,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-05 08:25:38,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-05 08:25:38,556 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-05 08:25:38,556 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-12-05 08:25:38,556 INFO L139 ounterexampleChecker]: Examining path program with hash -298802545, occurence #1 [2024-12-05 08:25:38,557 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-12-05 08:25:38,557 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-12-05 08:25:38,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 08:25:38,557 INFO L85 PathProgramCache]: Analyzing trace with hash -716282523, now seen corresponding path program 1 times [2024-12-05 08:25:38,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-05 08:25:38,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234524001] [2024-12-05 08:25:38,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-05 08:25:38,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 08:25:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 08:25:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 08:25:38,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-05 08:25:38,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234524001] [2024-12-05 08:25:38,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234524001] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-05 08:25:38,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-05 08:25:38,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-05 08:25:38,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13600677] [2024-12-05 08:25:38,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-05 08:25:38,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-05 08:25:38,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-05 08:25:38,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-05 08:25:38,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-05 08:25:38,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:38,872 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-12-05 08:25:38,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-05 08:25:38,872 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:38,872 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-12-05 08:25:38,872 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:45,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:45,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-05 08:25:45,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-05 08:25:45,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-05 08:25:45,499 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-05 08:25:45,499 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-12-05 08:25:45,499 INFO L139 ounterexampleChecker]: Examining path program with hash -2113901645, occurence #1 [2024-12-05 08:25:45,500 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-12-05 08:25:45,500 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-12-05 08:25:45,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 08:25:45,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1479144643, now seen corresponding path program 1 times [2024-12-05 08:25:45,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-05 08:25:45,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982166832] [2024-12-05 08:25:45,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-05 08:25:45,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 08:25:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 08:25:45,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 08:25:45,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-05 08:25:45,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982166832] [2024-12-05 08:25:45,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982166832] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-05 08:25:45,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-05 08:25:45,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-05 08:25:45,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406727437] [2024-12-05 08:25:45,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-05 08:25:45,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-05 08:25:45,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-05 08:25:45,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-05 08:25:45,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-05 08:25:45,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:45,739 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-12-05 08:25:45,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2024-12-05 08:25:45,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:45,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-12-05 08:25:45,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-12-05 08:25:45,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:52,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:52,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-05 08:25:52,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-05 08:25:52,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-05 08:25:52,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-05 08:25:52,184 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-05 08:25:52,184 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-12-05 08:25:52,184 INFO L139 ounterexampleChecker]: Examining path program with hash 918335685, occurence #1 [2024-12-05 08:25:52,184 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-12-05 08:25:52,184 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-12-05 08:25:52,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 08:25:52,184 INFO L85 PathProgramCache]: Analyzing trace with hash -600265881, now seen corresponding path program 1 times [2024-12-05 08:25:52,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-05 08:25:52,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824673829] [2024-12-05 08:25:52,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-05 08:25:52,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 08:25:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 08:25:52,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 08:25:52,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-05 08:25:52,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824673829] [2024-12-05 08:25:52,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824673829] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-05 08:25:52,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-05 08:25:52,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-05 08:25:52,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329694040] [2024-12-05 08:25:52,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-05 08:25:52,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-05 08:25:52,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-05 08:25:52,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-05 08:25:52,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-05 08:25:52,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:52,289 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-12-05 08:25:52,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-12-05 08:25:52,289 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:52,289 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-12-05 08:25:52,289 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-12-05 08:25:52,289 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-12-05 08:25:52,289 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:53,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:53,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-05 08:25:53,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-05 08:25:53,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-05 08:25:53,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-05 08:25:53,185 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-05 08:25:53,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-05 08:25:53,187 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-12-05 08:25:53,187 INFO L319 ceAbstractionStarter]: Result for error location t2_funThread1of2ForFork1 was SAFE (1/5) [2024-12-05 08:25:53,188 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-05 08:25:53,189 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-12-05 08:25:53,189 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-12-05 08:25:53,189 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;@a890433, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-05 08:25:53,189 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-05 08:25:53,193 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-12-05 08:25:53,193 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-12-05 08:25:53,193 INFO L139 ounterexampleChecker]: Examining path program with hash 2066630014, occurence #1 [2024-12-05 08:25:53,193 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-12-05 08:25:53,193 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-12-05 08:25:53,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 08:25:53,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1277132725, now seen corresponding path program 1 times [2024-12-05 08:25:53,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-05 08:25:53,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224956905] [2024-12-05 08:25:53,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-05 08:25:53,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 08:25:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 08:25:53,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 08:25:53,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-05 08:25:53,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224956905] [2024-12-05 08:25:53,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224956905] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-05 08:25:53,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-05 08:25:53,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-05 08:25:53,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105418823] [2024-12-05 08:25:53,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-05 08:25:53,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-05 08:25:53,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-05 08:25:53,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-05 08:25:53,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-05 08:25:53,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:53,220 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-12-05 08:25:53,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-05 08:25:53,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:53,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:53,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-05 08:25:53,243 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-12-05 08:25:53,243 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-12-05 08:25:53,243 INFO L139 ounterexampleChecker]: Examining path program with hash -1358839867, occurence #1 [2024-12-05 08:25:53,243 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-12-05 08:25:53,243 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-12-05 08:25:53,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 08:25:53,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1606131134, now seen corresponding path program 1 times [2024-12-05 08:25:53,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-05 08:25:53,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533655093] [2024-12-05 08:25:53,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-05 08:25:53,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 08:25:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 08:25:53,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 08:25:53,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-05 08:25:53,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533655093] [2024-12-05 08:25:53,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533655093] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-05 08:25:53,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-05 08:25:53,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-05 08:25:53,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890714626] [2024-12-05 08:25:53,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-05 08:25:53,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-05 08:25:53,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-05 08:25:53,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-05 08:25:53,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-05 08:25:53,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:53,365 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-12-05 08:25:53,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-05 08:25:53,365 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:53,365 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:53,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:53,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-05 08:25:53,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-05 08:25:53,414 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-12-05 08:25:53,415 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-12-05 08:25:53,415 INFO L139 ounterexampleChecker]: Examining path program with hash -1799872533, occurence #1 [2024-12-05 08:25:53,415 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-12-05 08:25:53,415 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-12-05 08:25:53,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 08:25:53,415 INFO L85 PathProgramCache]: Analyzing trace with hash 786096539, now seen corresponding path program 1 times [2024-12-05 08:25:53,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-05 08:25:53,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817019241] [2024-12-05 08:25:53,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-05 08:25:53,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 08:25:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 08:25:53,443 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-05 08:25:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 08:25:53,459 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-05 08:25:53,459 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-05 08:25:53,459 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-12-05 08:25:53,459 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-12-05 08:25:53,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-05 08:25:53,460 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-12-05 08:25:53,460 INFO L319 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (2/5) [2024-12-05 08:25:53,461 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-05 08:25:53,461 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-12-05 08:25:53,499 INFO L143 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2024-12-05 08:25:53,502 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-05 08:25:53,519 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-12-05 08:25:53,519 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t2_funThread3of3ForFork1 ======== [2024-12-05 08:25:53,519 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;@a890433, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-05 08:25:53,519 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-05 08:25:54,444 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-05 08:25:54,444 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-12-05 08:25:54,444 INFO L139 ounterexampleChecker]: Examining path program with hash 1880609107, occurence #1 [2024-12-05 08:25:54,444 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-12-05 08:25:54,444 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-12-05 08:25:54,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 08:25:54,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1033255672, now seen corresponding path program 1 times [2024-12-05 08:25:54,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-05 08:25:54,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160114011] [2024-12-05 08:25:54,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-05 08:25:54,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 08:25:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 08:25:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 08:25:54,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-05 08:25:54,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160114011] [2024-12-05 08:25:54,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160114011] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-05 08:25:54,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-05 08:25:54,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-05 08:25:54,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567064635] [2024-12-05 08:25:54,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-05 08:25:54,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-05 08:25:54,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-05 08:25:54,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-05 08:25:54,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-05 08:25:54,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:25:54,481 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-12-05 08:25:54,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 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) [2024-12-05 08:25:54,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:26:11,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:26:11,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-05 08:26:11,461 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-05 08:26:11,461 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-12-05 08:26:11,461 INFO L139 ounterexampleChecker]: Examining path program with hash 2051521186, occurence #1 [2024-12-05 08:26:11,461 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-12-05 08:26:11,461 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-12-05 08:26:11,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 08:26:11,462 INFO L85 PathProgramCache]: Analyzing trace with hash 264769992, now seen corresponding path program 1 times [2024-12-05 08:26:11,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-05 08:26:11,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561954172] [2024-12-05 08:26:11,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-05 08:26:11,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 08:26:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 08:26:11,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 08:26:11,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-05 08:26:11,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561954172] [2024-12-05 08:26:11,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561954172] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-05 08:26:11,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-05 08:26:11,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-05 08:26:11,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496063237] [2024-12-05 08:26:11,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-05 08:26:11,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-05 08:26:11,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-05 08:26:11,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-05 08:26:11,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-05 08:26:11,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:26:11,654 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-12-05 08:26:11,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2024-12-05 08:26:11,654 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:26:11,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:26:17,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:26:17,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-05 08:26:17,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-05 08:26:17,495 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-05 08:26:17,495 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-12-05 08:26:17,495 INFO L139 ounterexampleChecker]: Examining path program with hash -1890153382, occurence #1 [2024-12-05 08:26:17,495 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-12-05 08:26:17,495 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-12-05 08:26:17,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 08:26:17,495 INFO L85 PathProgramCache]: Analyzing trace with hash 21406294, now seen corresponding path program 2 times [2024-12-05 08:26:17,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-05 08:26:17,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728441996] [2024-12-05 08:26:17,496 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-05 08:26:17,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 08:26:17,521 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-05 08:26:17,521 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-05 08:26:17,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 08:26:17,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-05 08:26:17,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728441996] [2024-12-05 08:26:17,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728441996] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-05 08:26:17,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-05 08:26:17,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-05 08:26:17,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897742814] [2024-12-05 08:26:17,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-05 08:26:17,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-05 08:26:17,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-05 08:26:17,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-05 08:26:17,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-05 08:26:17,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:26:17,767 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-12-05 08:26:17,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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) [2024-12-05 08:26:17,767 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:26:17,767 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-12-05 08:26:17,767 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:26:24,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:26:24,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-05 08:26:24,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-05 08:26:24,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-05 08:26:24,244 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-05 08:26:24,244 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-12-05 08:26:24,244 INFO L139 ounterexampleChecker]: Examining path program with hash -964182074, occurence #1 [2024-12-05 08:26:24,244 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-12-05 08:26:24,244 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-12-05 08:26:24,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 08:26:24,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1636659508, now seen corresponding path program 3 times [2024-12-05 08:26:24,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-05 08:26:24,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160013124] [2024-12-05 08:26:24,245 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-05 08:26:24,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 08:26:24,273 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-12-05 08:26:24,273 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-05 08:26:24,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 08:26:24,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-05 08:26:24,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160013124] [2024-12-05 08:26:24,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160013124] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-05 08:26:24,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-05 08:26:24,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-05 08:26:24,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433811418] [2024-12-05 08:26:24,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-05 08:26:24,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-05 08:26:24,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-05 08:26:24,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-05 08:26:24,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-05 08:26:24,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:26:24,503 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-12-05 08:26:24,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2024-12-05 08:26:24,504 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:26:24,504 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-12-05 08:26:24,504 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-12-05 08:26:24,504 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:27:58,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:27:58,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-05 08:27:58,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-05 08:27:58,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-05 08:27:58,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-05 08:27:58,976 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-05 08:27:58,976 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-12-05 08:27:58,976 INFO L139 ounterexampleChecker]: Examining path program with hash 292465297, occurence #1 [2024-12-05 08:27:58,976 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-12-05 08:27:58,976 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-12-05 08:27:58,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 08:27:58,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1426248180, now seen corresponding path program 4 times [2024-12-05 08:27:58,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-05 08:27:58,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761459095] [2024-12-05 08:27:58,977 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-05 08:27:58,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 08:27:59,003 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-05 08:27:59,003 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-05 08:27:59,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 08:27:59,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-05 08:27:59,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761459095] [2024-12-05 08:27:59,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761459095] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-05 08:27:59,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-05 08:27:59,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-05 08:27:59,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181906111] [2024-12-05 08:27:59,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-05 08:27:59,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-05 08:27:59,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-05 08:27:59,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-05 08:27:59,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-05 08:27:59,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:27:59,140 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-12-05 08:27:59,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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) [2024-12-05 08:27:59,140 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-05 08:27:59,140 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-12-05 08:27:59,140 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-12-05 08:27:59,140 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-12-05 08:27:59,140 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.