./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-09-02_08-21-23.files/protection-local/28-race_reach_02-simple_racefree.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e94c40da Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i ./goblint.2024-09-02_08-21-23.files/protection-local/28-race_reach_02-simple_racefree.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-e94c40d-m [2024-09-24 12:33:38,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-24 12:33:38,486 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-09-24 12:33:38,491 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-24 12:33:38,491 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-24 12:33:38,512 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-24 12:33:38,513 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-24 12:33:38,513 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-24 12:33:38,514 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-24 12:33:38,514 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-24 12:33:38,515 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-24 12:33:38,515 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-24 12:33:38,515 INFO L153 SettingsManager]: * Use SBE=true [2024-09-24 12:33:38,516 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-24 12:33:38,516 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-24 12:33:38,516 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-24 12:33:38,518 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-24 12:33:38,520 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-24 12:33:38,521 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-24 12:33:38,521 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-24 12:33:38,521 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-24 12:33:38,522 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-24 12:33:38,523 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-24 12:33:38,523 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-24 12:33:38,523 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-24 12:33:38,524 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-24 12:33:38,524 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-24 12:33:38,524 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-24 12:33:38,525 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-24 12:33:38,525 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-24 12:33:38,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-09-24 12:33:38,526 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-24 12:33:38,526 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-24 12:33:38,526 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-24 12:33:38,526 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-24 12:33:38,527 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-09-24 12:33:38,527 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-24 12:33:38,527 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-24 12:33:38,528 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-09-24 12:33:38,528 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-09-24 12:33:38,528 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-09-24 12:33:38,529 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-09-24 12:33:38,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-24 12:33:38,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-24 12:33:38,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-24 12:33:38,837 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-24 12:33:38,838 INFO L274 PluginConnector]: CDTParser initialized [2024-09-24 12:33:38,839 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i [2024-09-24 12:33:40,370 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-24 12:33:40,622 INFO L384 CDTParser]: Found 1 translation units. [2024-09-24 12:33:40,622 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i [2024-09-24 12:33:40,641 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/a1ddb5f66/de7a675628f54dbb9cb11f8d78ddce2a/FLAG34afd2d39 [2024-09-24 12:33:40,654 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/a1ddb5f66/de7a675628f54dbb9cb11f8d78ddce2a [2024-09-24 12:33:40,657 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-24 12:33:40,658 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-24 12:33:40,658 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/./goblint.2024-09-02_08-21-23.files/protection-local/28-race_reach_02-simple_racefree.yml/witness.yml [2024-09-24 12:33:40,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-24 12:33:40,722 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-24 12:33:40,723 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-24 12:33:40,723 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-24 12:33:40,729 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-24 12:33:40,730 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 12:33:40" (1/2) ... [2024-09-24 12:33:40,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cac15f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 12:33:40, skipping insertion in model container [2024-09-24 12:33:40,731 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 12:33:40" (1/2) ... [2024-09-24 12:33:40,733 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4be80a4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 12:33:40, skipping insertion in model container [2024-09-24 12:33:40,734 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 24.09 12:33:40" (2/2) ... [2024-09-24 12:33:40,735 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cac15f4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 24.09 12:33:40, skipping insertion in model container [2024-09-24 12:33:40,735 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 24.09 12:33:40" (2/2) ... [2024-09-24 12:33:40,764 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-24 12:33:40,765 INFO L1541 ArrayList]: Location invariant before [L702-L702] 1 <= global [2024-09-24 12:33:40,765 INFO L1541 ArrayList]: Location invariant before [L702-L702] 0 <= global [2024-09-24 12:33:40,765 INFO L1541 ArrayList]: Location invariant before [L709-L709] 0 <= global [2024-09-24 12:33:40,765 INFO L1541 ArrayList]: Location invariant before [L709-L709] 0 <= global [2024-09-24 12:33:40,809 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-24 12:33:41,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 12:33:41,286 INFO L200 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-09-24 12:33:41,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 12:33:41,479 INFO L204 MainTranslator]: Completed translation [2024-09-24 12:33:41,480 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 24.09 12:33:41 WrapperNode [2024-09-24 12:33:41,480 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-24 12:33:41,482 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-24 12:33:41,482 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-24 12:33:41,482 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-24 12:33:41,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 24.09 12:33:41" (1/1) ... [2024-09-24 12:33:41,505 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 24.09 12:33:41" (1/1) ... [2024-09-24 12:33:41,530 INFO L138 Inliner]: procedures = 171, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 90 [2024-09-24 12:33:41,531 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-24 12:33:41,532 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-24 12:33:41,532 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-24 12:33:41,533 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-24 12:33:41,541 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 24.09 12:33:41" (1/1) ... [2024-09-24 12:33:41,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 24.09 12:33:41" (1/1) ... [2024-09-24 12:33:41,544 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 24.09 12:33:41" (1/1) ... [2024-09-24 12:33:41,546 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 24.09 12:33:41" (1/1) ... [2024-09-24 12:33:41,554 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 24.09 12:33:41" (1/1) ... [2024-09-24 12:33:41,568 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 24.09 12:33:41" (1/1) ... [2024-09-24 12:33:41,569 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 24.09 12:33:41" (1/1) ... [2024-09-24 12:33:41,575 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 24.09 12:33:41" (1/1) ... [2024-09-24 12:33:41,577 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-24 12:33:41,586 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-24 12:33:41,586 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-24 12:33:41,586 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-24 12:33:41,587 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 24.09 12:33:41" (1/1) ... [2024-09-24 12:33:41,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-09-24 12:33:41,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-24 12:33:41,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-09-24 12:33:41,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-09-24 12:33:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-09-24 12:33:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-09-24 12:33:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-09-24 12:33:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-24 12:33:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-24 12:33:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-09-24 12:33:41,679 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-09-24 12:33:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-24 12:33:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-24 12:33:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-09-24 12:33:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-24 12:33:41,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-24 12:33:41,682 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-09-24 12:33:41,807 INFO L242 CfgBuilder]: Building ICFG [2024-09-24 12:33:41,809 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-24 12:33:42,020 INFO L287 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-09-24 12:33:42,021 INFO L291 CfgBuilder]: Performing block encoding [2024-09-24 12:33:42,222 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-24 12:33:42,222 INFO L318 CfgBuilder]: Removed 10 assume(true) statements. [2024-09-24 12:33:42,224 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 12:33:42 BoogieIcfgContainer [2024-09-24 12:33:42,224 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-24 12:33:42,227 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-24 12:33:42,228 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-24 12:33:42,231 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-24 12:33:42,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 12:33:40" (1/4) ... [2024-09-24 12:33:42,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ca49d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 12:33:42, skipping insertion in model container [2024-09-24 12:33:42,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 24.09 12:33:40" (2/4) ... [2024-09-24 12:33:42,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ca49d0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 24.09 12:33:42, skipping insertion in model container [2024-09-24 12:33:42,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 24.09 12:33:41" (3/4) ... [2024-09-24 12:33:42,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ca49d0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 24.09 12:33:42, skipping insertion in model container [2024-09-24 12:33:42,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 12:33:42" (4/4) ... [2024-09-24 12:33:42,234 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_02-simple_racefree.i [2024-09-24 12:33:42,253 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-24 12:33:42,253 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-09-24 12:33:42,254 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-09-24 12:33:42,296 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-09-24 12:33:42,345 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 12:33:42,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-24 12:33:42,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-24 12:33:42,348 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-24 12:33:42,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-09-24 12:33:42,386 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-24 12:33:42,402 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread1of1ForFork0 ======== [2024-09-24 12:33:42,413 INFO L336 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=None, 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;@8d7f468, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 12:33:42,414 INFO L337 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-09-24 12:33:42,564 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-24 12:33:42,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:42,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1913251063, now seen corresponding path program 1 times [2024-09-24 12:33:42,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:42,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702445343] [2024-09-24 12:33:42,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:42,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:42,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-24 12:33:42,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:33:42,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702445343] [2024-09-24 12:33:42,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702445343] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:33:42,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:33:42,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-24 12:33:42,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585974542] [2024-09-24 12:33:42,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:33:42,854 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-24 12:33:42,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:33:42,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-24 12:33:42,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 12:33:42,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:42,878 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:33:42,879 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2024-09-24 12:33:42,879 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:42,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:42,909 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-24 12:33:42,909 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-24 12:33:42,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:42,910 INFO L85 PathProgramCache]: Analyzing trace with hash 353925201, now seen corresponding path program 1 times [2024-09-24 12:33:42,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:42,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924361156] [2024-09-24 12:33:42,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:42,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:43,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-24 12:33:43,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:33:43,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924361156] [2024-09-24 12:33:43,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924361156] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:33:43,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:33:43,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-09-24 12:33:43,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818570759] [2024-09-24 12:33:43,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:33:43,107 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-24 12:33:43,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:33:43,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-24 12:33:43,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-24 12:33:43,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:43,108 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:33:43,108 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2024-09-24 12:33:43,108 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:43,109 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:43,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:43,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:43,160 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-24 12:33:43,160 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-24 12:33:43,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:43,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1138413023, now seen corresponding path program 1 times [2024-09-24 12:33:43,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:43,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446945917] [2024-09-24 12:33:43,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:43,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:43,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-24 12:33:43,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:33:43,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446945917] [2024-09-24 12:33:43,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446945917] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:33:43,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:33:43,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-24 12:33:43,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261596143] [2024-09-24 12:33:43,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:33:43,299 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-24 12:33:43,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:33:43,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-24 12:33:43,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-24 12:33:43,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:43,304 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:33:43,304 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2024-09-24 12:33:43,304 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:43,304 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:43,304 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:43,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:43,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:43,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-24 12:33:43,854 INFO L785 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 2 remaining) [2024-09-24 12:33:43,856 INFO L785 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 2 remaining) [2024-09-24 12:33:43,857 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-24 12:33:43,867 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-09-24 12:33:43,869 INFO L312 ceAbstractionStarter]: Result for error location t_funThread1of1ForFork0 was SAFE,SAFE (1/2) [2024-09-24 12:33:43,875 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 12:33:43,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-24 12:33:43,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-24 12:33:43,879 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-24 12:33:43,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2024-09-24 12:33:43,883 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-24 12:33:43,883 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-09-24 12:33:43,884 INFO L336 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=None, 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;@8d7f468, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 12:33:43,884 INFO L337 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-09-24 12:33:43,922 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-24 12:33:43,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:43,923 INFO L85 PathProgramCache]: Analyzing trace with hash 149794276, now seen corresponding path program 1 times [2024-09-24 12:33:43,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:43,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065564642] [2024-09-24 12:33:43,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:43,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:43,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 12:33:43,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:33:43,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065564642] [2024-09-24 12:33:43,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065564642] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:33:43,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:33:43,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-24 12:33:43,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805389988] [2024-09-24 12:33:43,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:33:43,970 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-24 12:33:43,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:33:43,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-24 12:33:43,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 12:33:43,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:43,994 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:33:43,994 INFO L475 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) [2024-09-24 12:33:43,994 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:44,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:44,024 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-24 12:33:44,024 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-24 12:33:44,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:44,024 INFO L85 PathProgramCache]: Analyzing trace with hash -826658686, now seen corresponding path program 1 times [2024-09-24 12:33:44,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:44,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640407483] [2024-09-24 12:33:44,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:44,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-24 12:33:44,050 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-09-24 12:33:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-24 12:33:44,099 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-09-24 12:33:44,099 INFO L326 BasicCegarLoop]: Counterexample is feasible [2024-09-24 12:33:44,099 INFO L785 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-09-24 12:33:44,100 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 3 remaining) [2024-09-24 12:33:44,100 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 3 remaining) [2024-09-24 12:33:44,100 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-24 12:33:44,101 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1] [2024-09-24 12:33:44,102 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2024-09-24 12:33:44,106 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-09-24 12:33:44,106 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-09-24 12:33:44,126 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-09-24 12:33:44,132 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 12:33:44,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-24 12:33:44,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-24 12:33:44,137 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-24 12:33:44,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2024-09-24 12:33:44,141 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-24 12:33:44,141 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread1of2ForFork0 ======== [2024-09-24 12:33:44,142 INFO L336 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=None, 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;@8d7f468, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 12:33:44,142 INFO L337 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-09-24 12:33:44,375 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-24 12:33:44,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:44,375 INFO L85 PathProgramCache]: Analyzing trace with hash 230521349, now seen corresponding path program 1 times [2024-09-24 12:33:44,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:44,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647294391] [2024-09-24 12:33:44,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:44,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:44,496 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-24 12:33:44,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:33:44,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647294391] [2024-09-24 12:33:44,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647294391] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:33:44,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:33:44,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-24 12:33:44,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137604747] [2024-09-24 12:33:44,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:33:44,498 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-24 12:33:44,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:33:44,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-24 12:33:44,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-24 12:33:44,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:44,500 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:33:44,500 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) 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) [2024-09-24 12:33:44,500 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:44,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:44,527 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-24 12:33:44,527 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-24 12:33:44,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:44,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1489525114, now seen corresponding path program 1 times [2024-09-24 12:33:44,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:44,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758046174] [2024-09-24 12:33:44,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:44,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:44,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-24 12:33:44,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:33:44,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758046174] [2024-09-24 12:33:44,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758046174] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:33:44,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:33:44,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-09-24 12:33:44,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828010549] [2024-09-24 12:33:44,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:33:44,573 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-24 12:33:44,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:33:44,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-24 12:33:44,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-24 12:33:44,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:44,574 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:33:44,574 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2024-09-24 12:33:44,575 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:44,575 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:44,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:44,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:44,641 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-24 12:33:44,641 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-24 12:33:44,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:44,641 INFO L85 PathProgramCache]: Analyzing trace with hash -948287108, now seen corresponding path program 1 times [2024-09-24 12:33:44,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:44,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887849292] [2024-09-24 12:33:44,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:44,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:44,725 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-24 12:33:44,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:33:44,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887849292] [2024-09-24 12:33:44,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887849292] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 12:33:44,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826080574] [2024-09-24 12:33:44,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:44,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 12:33:44,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-24 12:33:44,728 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 12:33:44,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-24 12:33:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:44,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-24 12:33:44,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 12:33:44,894 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-24 12:33:44,894 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 12:33:44,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826080574] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:33:44,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-24 12:33:44,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-09-24 12:33:44,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014000987] [2024-09-24 12:33:44,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:33:44,896 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-24 12:33:44,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:33:44,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-24 12:33:44,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-24 12:33:44,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:44,897 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:33:44,897 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2024-09-24 12:33:44,897 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:44,897 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:44,898 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:45,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:45,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:45,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-24 12:33:45,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-24 12:33:45,273 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 12:33:45,273 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-24 12:33:45,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:45,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1786720886, now seen corresponding path program 1 times [2024-09-24 12:33:45,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:45,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630545141] [2024-09-24 12:33:45,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:45,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:45,372 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-24 12:33:45,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:33:45,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630545141] [2024-09-24 12:33:45,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630545141] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:33:45,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:33:45,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-24 12:33:45,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729315853] [2024-09-24 12:33:45,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:33:45,373 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-24 12:33:45,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:33:45,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-24 12:33:45,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-24 12:33:45,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:45,374 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:33:45,375 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-09-24 12:33:45,375 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:45,375 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:45,375 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-09-24 12:33:45,377 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:45,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:45,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:45,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-24 12:33:45,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:45,470 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-09-24 12:33:45,470 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-24 12:33:45,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:45,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1897896667, now seen corresponding path program 1 times [2024-09-24 12:33:45,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:45,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41275741] [2024-09-24 12:33:45,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:45,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:45,567 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-24 12:33:45,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:33:45,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41275741] [2024-09-24 12:33:45,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41275741] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 12:33:45,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246933532] [2024-09-24 12:33:45,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:45,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 12:33:45,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-24 12:33:45,570 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 12:33:45,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-24 12:33:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:45,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-24 12:33:45,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 12:33:45,731 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-24 12:33:45,731 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 12:33:45,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246933532] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:33:45,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-24 12:33:45,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-09-24 12:33:45,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292728222] [2024-09-24 12:33:45,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:33:45,732 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 12:33:45,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:33:45,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 12:33:45,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-09-24 12:33:45,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:45,733 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:33:45,733 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-24 12:33:45,733 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:45,733 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:45,733 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-09-24 12:33:45,733 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:45,733 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:47,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:47,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:47,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-24 12:33:47,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:47,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 12:33:47,780 INFO L785 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 2 remaining) [2024-09-24 12:33:47,780 INFO L785 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 2 remaining) [2024-09-24 12:33:47,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-24 12:33:47,981 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-24 12:33:47,983 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-09-24 12:33:47,983 INFO L312 ceAbstractionStarter]: Result for error location t_funThread1of2ForFork0 was SAFE,SAFE (1/3) [2024-09-24 12:33:47,986 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 12:33:47,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-24 12:33:47,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-24 12:33:47,988 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-24 12:33:47,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (7)] Waiting until timeout for monitored process [2024-09-24 12:33:47,992 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-24 12:33:47,993 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-09-24 12:33:47,993 INFO L336 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=None, 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;@8d7f468, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 12:33:47,993 INFO L337 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-09-24 12:33:48,050 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-24 12:33:48,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:48,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1798134528, now seen corresponding path program 1 times [2024-09-24 12:33:48,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:48,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523806138] [2024-09-24 12:33:48,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:48,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-24 12:33:48,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:33:48,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523806138] [2024-09-24 12:33:48,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523806138] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:33:48,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:33:48,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-24 12:33:48,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781445021] [2024-09-24 12:33:48,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:33:48,069 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-24 12:33:48,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:33:48,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-24 12:33:48,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 12:33:48,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,070 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:33:48,070 INFO L475 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) [2024-09-24 12:33:48,070 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,115 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-09-24 12:33:48,115 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-24 12:33:48,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:48,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1747059443, now seen corresponding path program 1 times [2024-09-24 12:33:48,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:48,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996635391] [2024-09-24 12:33:48,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:48,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:48,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 12:33:48,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:33:48,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996635391] [2024-09-24 12:33:48,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996635391] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:33:48,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:33:48,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-24 12:33:48,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925016062] [2024-09-24 12:33:48,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:33:48,169 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-24 12:33:48,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:33:48,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-24 12:33:48,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-24 12:33:48,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,170 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:33:48,170 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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) [2024-09-24 12:33:48,170 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,170 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:48,193 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-09-24 12:33:48,193 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-24 12:33:48,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:48,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1209538665, now seen corresponding path program 1 times [2024-09-24 12:33:48,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:48,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731026963] [2024-09-24 12:33:48,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:48,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-24 12:33:48,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:33:48,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731026963] [2024-09-24 12:33:48,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731026963] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:33:48,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:33:48,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-24 12:33:48,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168614970] [2024-09-24 12:33:48,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:33:48,235 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-24 12:33:48,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:33:48,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-24 12:33:48,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-24 12:33:48,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,237 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:33:48,237 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-24 12:33:48,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:48,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:48,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:48,294 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-09-24 12:33:48,294 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-24 12:33:48,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:48,295 INFO L85 PathProgramCache]: Analyzing trace with hash -2090928785, now seen corresponding path program 1 times [2024-09-24 12:33:48,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:48,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534040989] [2024-09-24 12:33:48,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:48,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:48,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-24 12:33:48,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:33:48,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534040989] [2024-09-24 12:33:48,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534040989] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:33:48,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:33:48,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-24 12:33:48,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657589907] [2024-09-24 12:33:48,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:33:48,464 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 12:33:48,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:33:48,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 12:33:48,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-24 12:33:48,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,465 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:33:48,465 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-09-24 12:33:48,465 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,465 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:48,465 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:48,465 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:48,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:48,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-24 12:33:48,496 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-09-24 12:33:48,496 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-24 12:33:48,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:48,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1276033518, now seen corresponding path program 1 times [2024-09-24 12:33:48,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:48,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412662972] [2024-09-24 12:33:48,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:48,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-24 12:33:48,536 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-09-24 12:33:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-24 12:33:48,549 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-09-24 12:33:48,550 INFO L326 BasicCegarLoop]: Counterexample is feasible [2024-09-24 12:33:48,550 INFO L785 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-09-24 12:33:48,550 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 3 remaining) [2024-09-24 12:33:48,550 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 3 remaining) [2024-09-24 12:33:48,550 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-09-24 12:33:48,551 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-09-24 12:33:48,551 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN,UNKNOWN (2/3) [2024-09-24 12:33:48,552 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-09-24 12:33:48,552 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-09-24 12:33:48,569 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-09-24 12:33:48,571 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 12:33:48,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-24 12:33:48,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-24 12:33:48,573 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-24 12:33:48,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Waiting until timeout for monitored process [2024-09-24 12:33:48,576 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-24 12:33:48,577 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-09-24 12:33:48,577 INFO L336 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=None, 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;@8d7f468, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 12:33:48,577 INFO L337 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-09-24 12:33:48,660 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-24 12:33:48,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:48,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1212564977, now seen corresponding path program 1 times [2024-09-24 12:33:48,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:48,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146868881] [2024-09-24 12:33:48,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:48,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:48,679 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-24 12:33:48,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:33:48,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146868881] [2024-09-24 12:33:48,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146868881] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:33:48,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:33:48,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-24 12:33:48,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257604865] [2024-09-24 12:33:48,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:33:48,680 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-24 12:33:48,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:33:48,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-24 12:33:48,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 12:33:48,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,681 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:33:48,681 INFO L475 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) [2024-09-24 12:33:48,681 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,757 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-09-24 12:33:48,758 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-24 12:33:48,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:48,758 INFO L85 PathProgramCache]: Analyzing trace with hash -817733703, now seen corresponding path program 1 times [2024-09-24 12:33:48,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:48,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349862268] [2024-09-24 12:33:48,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:48,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:48,819 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-24 12:33:48,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:33:48,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349862268] [2024-09-24 12:33:48,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349862268] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:33:48,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:33:48,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-24 12:33:48,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017647129] [2024-09-24 12:33:48,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:33:48,820 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-24 12:33:48,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:33:48,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-24 12:33:48,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-24 12:33:48,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,821 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:33:48,821 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-24 12:33:48,821 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,821 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:48,849 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-09-24 12:33:48,849 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-24 12:33:48,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:48,849 INFO L85 PathProgramCache]: Analyzing trace with hash 2113569342, now seen corresponding path program 1 times [2024-09-24 12:33:48,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:48,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895965516] [2024-09-24 12:33:48,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:48,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:48,886 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-24 12:33:48,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:33:48,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895965516] [2024-09-24 12:33:48,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895965516] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:33:48,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:33:48,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-24 12:33:48,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736816904] [2024-09-24 12:33:48,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:33:48,887 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-24 12:33:48,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:33:48,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-24 12:33:48,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-24 12:33:48,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,888 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:33:48,888 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) 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) [2024-09-24 12:33:48,888 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,888 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:48,888 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:48,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:48,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:48,974 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-09-24 12:33:48,974 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-24 12:33:48,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:48,975 INFO L85 PathProgramCache]: Analyzing trace with hash -247459167, now seen corresponding path program 1 times [2024-09-24 12:33:48,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:48,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667065200] [2024-09-24 12:33:48,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:48,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:49,027 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-24 12:33:49,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:33:49,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667065200] [2024-09-24 12:33:49,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667065200] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 12:33:49,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047084355] [2024-09-24 12:33:49,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:49,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 12:33:49,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-24 12:33:49,029 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 12:33:49,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-24 12:33:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:49,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-24 12:33:49,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 12:33:49,184 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-24 12:33:49,185 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 12:33:49,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047084355] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:33:49,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-24 12:33:49,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-09-24 12:33:49,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162429937] [2024-09-24 12:33:49,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:33:49,186 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-24 12:33:49,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:33:49,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-24 12:33:49,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-24 12:33:49,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:49,187 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:33:49,187 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-24 12:33:49,187 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:49,187 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:49,187 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:49,187 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:49,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:49,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:49,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:49,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-24 12:33:49,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-24 12:33:49,480 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 12:33:49,481 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-24 12:33:49,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:49,482 INFO L85 PathProgramCache]: Analyzing trace with hash 959390032, now seen corresponding path program 1 times [2024-09-24 12:33:49,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:49,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334337990] [2024-09-24 12:33:49,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:49,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:49,729 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-24 12:33:49,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:33:49,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334337990] [2024-09-24 12:33:49,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334337990] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:33:49,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:33:49,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-24 12:33:49,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289840968] [2024-09-24 12:33:49,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:33:49,731 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-24 12:33:49,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:33:49,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-24 12:33:49,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-24 12:33:49,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:49,732 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:33:49,733 INFO L475 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) [2024-09-24 12:33:49,733 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:49,733 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:49,733 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:49,733 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-09-24 12:33:49,733 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:49,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:49,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:49,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:49,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-24 12:33:49,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-24 12:33:49,796 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-09-24 12:33:49,796 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-24 12:33:49,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:49,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1379119264, now seen corresponding path program 1 times [2024-09-24 12:33:49,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:49,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968848222] [2024-09-24 12:33:49,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:49,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-24 12:33:49,814 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-09-24 12:33:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-24 12:33:49,832 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-09-24 12:33:49,832 INFO L326 BasicCegarLoop]: Counterexample is feasible [2024-09-24 12:33:49,832 INFO L785 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-09-24 12:33:49,832 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 3 remaining) [2024-09-24 12:33:49,832 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 3 remaining) [2024-09-24 12:33:49,832 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-09-24 12:33:49,833 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-09-24 12:33:49,834 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN,UNKNOWN (1/4) [2024-09-24 12:33:49,834 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-09-24 12:33:49,834 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-09-24 12:33:49,857 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-09-24 12:33:49,864 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 12:33:49,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-24 12:33:49,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-24 12:33:49,869 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-24 12:33:49,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (10)] Waiting until timeout for monitored process [2024-09-24 12:33:49,873 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-24 12:33:49,873 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread4of4ForFork0 ======== [2024-09-24 12:33:49,874 INFO L336 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=None, 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;@8d7f468, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 12:33:49,874 INFO L337 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-09-24 12:33:50,010 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-24 12:33:50,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:50,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1072134597, now seen corresponding path program 1 times [2024-09-24 12:33:50,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:50,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160820589] [2024-09-24 12:33:50,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:50,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:50,041 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-24 12:33:50,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:33:50,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160820589] [2024-09-24 12:33:50,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160820589] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:33:50,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:33:50,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-24 12:33:50,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247542394] [2024-09-24 12:33:50,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:33:50,042 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-24 12:33:50,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:33:50,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-24 12:33:50,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 12:33:50,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:50,043 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:33:50,043 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2024-09-24 12:33:50,043 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:50,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:50,160 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-09-24 12:33:50,160 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-24 12:33:50,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:50,160 INFO L85 PathProgramCache]: Analyzing trace with hash 385068652, now seen corresponding path program 1 times [2024-09-24 12:33:50,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:50,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358715633] [2024-09-24 12:33:50,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:50,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:50,230 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-24 12:33:50,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:33:50,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358715633] [2024-09-24 12:33:50,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358715633] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:33:50,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:33:50,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-24 12:33:50,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718540833] [2024-09-24 12:33:50,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:33:50,231 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-24 12:33:50,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:33:50,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-24 12:33:50,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-24 12:33:50,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:50,232 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:33:50,232 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-24 12:33:50,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:50,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:50,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:50,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:50,495 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-09-24 12:33:50,495 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-24 12:33:50,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:50,496 INFO L85 PathProgramCache]: Analyzing trace with hash 180981873, now seen corresponding path program 1 times [2024-09-24 12:33:50,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:50,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964058801] [2024-09-24 12:33:50,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:50,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:50,575 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-24 12:33:50,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:33:50,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964058801] [2024-09-24 12:33:50,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964058801] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 12:33:50,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017427571] [2024-09-24 12:33:50,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:50,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 12:33:50,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-24 12:33:50,578 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 12:33:50,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-24 12:33:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:50,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-24 12:33:50,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 12:33:50,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-24 12:33:50,765 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-24 12:33:50,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 12:33:50,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017427571] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:33:50,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-24 12:33:50,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-09-24 12:33:50,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027618563] [2024-09-24 12:33:50,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:33:50,768 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-24 12:33:50,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:33:50,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-24 12:33:50,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 12:33:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:50,769 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:33:50,769 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-09-24 12:33:50,770 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:50,770 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:50,770 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:50,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:50,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:50,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:50,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-24 12:33:51,171 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-24 12:33:51,172 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-24 12:33:51,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:51,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1753328241, now seen corresponding path program 1 times [2024-09-24 12:33:51,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:51,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109940653] [2024-09-24 12:33:51,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:51,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:51,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:51,252 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-24 12:33:51,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:33:51,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109940653] [2024-09-24 12:33:51,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109940653] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:33:51,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:33:51,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-24 12:33:51,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957635275] [2024-09-24 12:33:51,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:33:51,254 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-24 12:33:51,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:33:51,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-24 12:33:51,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-24 12:33:51,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:51,254 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:33:51,255 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 26.0) internal successors, (78), 4 states have internal predecessors, (78), 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) [2024-09-24 12:33:51,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:51,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:51,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:51,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:51,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:51,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:51,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:51,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-24 12:33:51,433 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-09-24 12:33:51,433 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-24 12:33:51,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:51,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1668637480, now seen corresponding path program 1 times [2024-09-24 12:33:51,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:51,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85052655] [2024-09-24 12:33:51,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:51,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-24 12:33:51,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:33:51,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85052655] [2024-09-24 12:33:51,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85052655] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:33:51,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:33:51,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-24 12:33:51,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371650095] [2024-09-24 12:33:51,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:33:51,536 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 12:33:51,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:33:51,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 12:33:51,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-09-24 12:33:51,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:51,537 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:33:51,537 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 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) [2024-09-24 12:33:51,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:51,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:51,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:51,538 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-09-24 12:33:51,538 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:52,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:52,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:52,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:52,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-24 12:33:52,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 12:33:52,320 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-09-24 12:33:52,320 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-24 12:33:52,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:33:52,320 INFO L85 PathProgramCache]: Analyzing trace with hash -179282064, now seen corresponding path program 2 times [2024-09-24 12:33:52,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:33:52,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456712478] [2024-09-24 12:33:52,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:33:52,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:33:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:33:52,456 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-24 12:33:52,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:33:52,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456712478] [2024-09-24 12:33:52,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456712478] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:33:52,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:33:52,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 12:33:52,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057995028] [2024-09-24 12:33:52,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:33:52,458 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-24 12:33:52,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:33:52,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-24 12:33:52,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-09-24 12:33:52,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:52,459 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:33:52,459 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.2) internal successors, (86), 6 states have internal predecessors, (86), 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) [2024-09-24 12:33:52,460 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:33:52,460 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:52,460 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:33:52,460 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-09-24 12:33:52,460 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-09-24 12:33:52,460 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:08,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:08,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:39:08,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:39:08,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-24 12:39:08,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 12:39:08,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-24 12:39:08,070 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-09-24 12:39:08,071 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-24 12:39:08,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:39:08,071 INFO L85 PathProgramCache]: Analyzing trace with hash 66111546, now seen corresponding path program 3 times [2024-09-24 12:39:08,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:39:08,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944721591] [2024-09-24 12:39:08,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:39:08,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:39:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:39:08,233 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-24 12:39:08,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:39:08,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944721591] [2024-09-24 12:39:08,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944721591] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 12:39:08,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63915455] [2024-09-24 12:39:08,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 12:39:08,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 12:39:08,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-24 12:39:08,236 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 12:39:08,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-24 12:39:08,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-24 12:39:08,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 12:39:08,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-24 12:39:08,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 12:39:08,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-24 12:39:08,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-24 12:39:08,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-24 12:39:08,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-24 12:39:08,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-09-24 12:39:08,628 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-24 12:39:08,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 12:39:08,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63915455] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:39:08,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-24 12:39:08,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2024-09-24 12:39:08,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902489250] [2024-09-24 12:39:08,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:39:08,629 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 12:39:08,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:39:08,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 12:39:08,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-09-24 12:39:08,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:08,630 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:39:08,630 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 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) [2024-09-24 12:39:08,630 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:08,630 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:39:08,630 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:39:08,630 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-09-24 12:39:08,630 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-09-24 12:39:08,630 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-09-24 12:39:08,630 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:12,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:12,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:39:12,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:39:12,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-24 12:39:12,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 12:39:12,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-24 12:39:12,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-24 12:39:12,519 INFO L785 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 2 remaining) [2024-09-24 12:39:12,519 INFO L785 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 2 remaining) [2024-09-24 12:39:12,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-24 12:39:12,719 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-24 12:39:12,721 INFO L408 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2024-09-24 12:39:12,722 INFO L312 ceAbstractionStarter]: Result for error location t_funThread4of4ForFork0 was SAFE,SAFE (1/5) [2024-09-24 12:39:12,724 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 12:39:12,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-24 12:39:12,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-24 12:39:12,729 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-24 12:39:12,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (13)] Waiting until timeout for monitored process [2024-09-24 12:39:12,733 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-24 12:39:12,734 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread2of4ForFork0 ======== [2024-09-24 12:39:12,734 INFO L336 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=None, 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;@8d7f468, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 12:39:12,734 INFO L337 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-09-24 12:39:13,489 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-24 12:39:13,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:39:13,489 INFO L85 PathProgramCache]: Analyzing trace with hash -943171919, now seen corresponding path program 1 times [2024-09-24 12:39:13,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:39:13,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308988069] [2024-09-24 12:39:13,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:39:13,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:39:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:39:13,508 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-24 12:39:13,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:39:13,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308988069] [2024-09-24 12:39:13,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308988069] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:39:13,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:39:13,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-24 12:39:13,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224382328] [2024-09-24 12:39:13,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:39:13,509 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-24 12:39:13,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:39:13,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-24 12:39:13,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 12:39:13,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:13,510 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:39:13,510 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 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) [2024-09-24 12:39:13,510 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:13,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:13,563 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-09-24 12:39:13,563 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-24 12:39:13,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:39:13,563 INFO L85 PathProgramCache]: Analyzing trace with hash -782864965, now seen corresponding path program 1 times [2024-09-24 12:39:13,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:39:13,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283521793] [2024-09-24 12:39:13,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:39:13,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:39:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:39:13,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-24 12:39:13,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:39:13,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283521793] [2024-09-24 12:39:13,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283521793] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:39:13,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:39:13,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-24 12:39:13,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314310718] [2024-09-24 12:39:13,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:39:13,624 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-24 12:39:13,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:39:13,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-24 12:39:13,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-24 12:39:13,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:13,624 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:39:13,625 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) 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) [2024-09-24 12:39:13,625 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:13,625 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:13,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:13,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:39:13,742 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-09-24 12:39:13,742 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-24 12:39:13,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:39:13,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2007270511, now seen corresponding path program 1 times [2024-09-24 12:39:13,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:39:13,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340520232] [2024-09-24 12:39:13,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:39:13,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:39:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:39:13,799 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-24 12:39:13,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:39:13,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340520232] [2024-09-24 12:39:13,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340520232] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 12:39:13,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268856227] [2024-09-24 12:39:13,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:39:13,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 12:39:13,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-24 12:39:13,802 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 12:39:13,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-24 12:39:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:39:13,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-24 12:39:13,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 12:39:13,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-24 12:39:13,954 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-24 12:39:13,954 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 12:39:13,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268856227] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:39:13,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-24 12:39:13,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-09-24 12:39:13,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908880055] [2024-09-24 12:39:13,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:39:13,955 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-24 12:39:13,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:39:13,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-24 12:39:13,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 12:39:13,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:13,956 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:39:13,956 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-24 12:39:13,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:13,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:39:13,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:14,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:14,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:39:14,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:39:14,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-24 12:39:14,244 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-09-24 12:39:14,245 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-24 12:39:14,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:39:14,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1082941401, now seen corresponding path program 1 times [2024-09-24 12:39:14,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:39:14,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233852189] [2024-09-24 12:39:14,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:39:14,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:39:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:39:14,292 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-24 12:39:14,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:39:14,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233852189] [2024-09-24 12:39:14,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233852189] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:39:14,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:39:14,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-24 12:39:14,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146333711] [2024-09-24 12:39:14,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:39:14,293 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-24 12:39:14,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:39:14,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-24 12:39:14,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-24 12:39:14,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:14,293 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:39:14,294 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-24 12:39:14,294 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:14,294 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:39:14,294 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:39:14,294 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:14,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:14,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:39:14,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:39:14,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-24 12:39:14,491 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-09-24 12:39:14,491 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-24 12:39:14,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:39:14,492 INFO L85 PathProgramCache]: Analyzing trace with hash -594080501, now seen corresponding path program 1 times [2024-09-24 12:39:14,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:39:14,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493117200] [2024-09-24 12:39:14,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:39:14,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:39:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:39:14,582 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-24 12:39:14,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:39:14,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493117200] [2024-09-24 12:39:14,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493117200] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:39:14,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:39:14,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-24 12:39:14,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140508084] [2024-09-24 12:39:14,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:39:14,583 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 12:39:14,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:39:14,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 12:39:14,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-09-24 12:39:14,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:14,584 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:39:14,584 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) 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) [2024-09-24 12:39:14,584 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:14,584 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:39:14,584 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:39:14,584 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-09-24 12:39:14,584 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:14,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:14,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:39:14,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:39:14,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-24 12:39:14,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 12:39:14,901 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-09-24 12:39:14,901 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-09-24 12:39:14,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 12:39:14,902 INFO L85 PathProgramCache]: Analyzing trace with hash -807308629, now seen corresponding path program 1 times [2024-09-24 12:39:14,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 12:39:14,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927146547] [2024-09-24 12:39:14,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 12:39:14,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 12:39:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 12:39:15,010 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-24 12:39:15,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 12:39:15,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927146547] [2024-09-24 12:39:15,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927146547] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 12:39:15,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 12:39:15,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 12:39:15,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798413845] [2024-09-24 12:39:15,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 12:39:15,012 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-24 12:39:15,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 12:39:15,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-24 12:39:15,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-09-24 12:39:15,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:15,013 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 12:39:15,013 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.0) internal successors, (80), 6 states have internal predecessors, (80), 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) [2024-09-24 12:39:15,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 12:39:15,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:39:15,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 12:39:15,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-09-24 12:39:15,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-09-24 12:39:15,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. Killed by 15