./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-08-08_07-59-58.files/mutex-meet-local/28-race_reach_24-sound_lock_racing.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c091e2ee 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_24-sound_lock_racing.i ./goblint.2024-08-08_07-59-58.files/mutex-meet-local/28-race_reach_24-sound_lock_racing.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-c091e2e-m [2024-08-14 02:32:10,613 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-08-14 02:32:10,707 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-08-14 02:32:10,713 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-08-14 02:32:10,713 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-08-14 02:32:10,742 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-08-14 02:32:10,743 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-08-14 02:32:10,743 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-08-14 02:32:10,744 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-08-14 02:32:10,744 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-08-14 02:32:10,745 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-08-14 02:32:10,745 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-08-14 02:32:10,745 INFO L153 SettingsManager]: * Use SBE=true [2024-08-14 02:32:10,746 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-08-14 02:32:10,746 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-08-14 02:32:10,746 INFO L153 SettingsManager]: * sizeof long=4 [2024-08-14 02:32:10,747 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-08-14 02:32:10,747 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-08-14 02:32:10,747 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-08-14 02:32:10,748 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-08-14 02:32:10,748 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-08-14 02:32:10,749 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-08-14 02:32:10,749 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-08-14 02:32:10,749 INFO L153 SettingsManager]: * sizeof long double=12 [2024-08-14 02:32:10,749 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-08-14 02:32:10,750 INFO L153 SettingsManager]: * Use constant arrays=true [2024-08-14 02:32:10,750 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-08-14 02:32:10,750 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-08-14 02:32:10,750 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-08-14 02:32:10,751 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-08-14 02:32:10,751 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-08-14 02:32:10,751 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-08-14 02:32:10,751 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-08-14 02:32:10,752 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-08-14 02:32:10,752 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-08-14 02:32:10,755 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-08-14 02:32:10,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-08-14 02:32:10,756 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-08-14 02:32:10,757 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-08-14 02:32:10,757 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-08-14 02:32:10,757 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-08-14 02:32:10,758 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-08-14 02:32:10,758 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-08-14 02:32:11,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-08-14 02:32:11,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-08-14 02:32:11,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-08-14 02:32:11,056 INFO L270 PluginConnector]: Initializing CDTParser... [2024-08-14 02:32:11,056 INFO L274 PluginConnector]: CDTParser initialized [2024-08-14 02:32:11,058 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i [2024-08-14 02:32:12,497 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-08-14 02:32:12,734 INFO L384 CDTParser]: Found 1 translation units. [2024-08-14 02:32:12,735 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i [2024-08-14 02:32:12,746 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/c5ae5f809/7f99c31c2d66429289fba8f20e887896/FLAG7f93ceb70 [2024-08-14 02:32:12,757 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/c5ae5f809/7f99c31c2d66429289fba8f20e887896 [2024-08-14 02:32:12,759 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-08-14 02:32:12,760 INFO L274 PluginConnector]: Witness Parser initialized [2024-08-14 02:32:12,760 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/./goblint.2024-08-08_07-59-58.files/mutex-meet-local/28-race_reach_24-sound_lock_racing.yml/witness.yml [2024-08-14 02:32:12,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-08-14 02:32:12,839 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-08-14 02:32:12,845 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-08-14 02:32:12,845 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-08-14 02:32:12,853 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-08-14 02:32:12,854 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.08 02:32:12" (1/2) ... [2024-08-14 02:32:12,855 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72473044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:32:12, skipping insertion in model container [2024-08-14 02:32:12,858 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.08 02:32:12" (1/2) ... [2024-08-14 02:32:12,860 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5ee05b6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:32:12, skipping insertion in model container [2024-08-14 02:32:12,860 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.08 02:32:12" (2/2) ... [2024-08-14 02:32:12,860 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72473044 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 02:32:12, skipping insertion in model container [2024-08-14 02:32:12,861 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.08 02:32:12" (2/2) ... [2024-08-14 02:32:12,861 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-08-14 02:32:12,883 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-08-14 02:32:12,885 INFO L97 edCorrectnessWitness]: Location invariant before [L702-L702] global == 1 [2024-08-14 02:32:12,885 INFO L97 edCorrectnessWitness]: Location invariant before [L712-L712] global == 0 || (global == 0 || global == 1) [2024-08-14 02:32:12,886 INFO L97 edCorrectnessWitness]: Location invariant before [L702-L702] global == 0 [2024-08-14 02:32:12,928 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-08-14 02:32:13,310 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-14 02:32:13,331 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local [2024-08-14 02:32:13,420 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-14 02:32:13,459 INFO L206 MainTranslator]: Completed translation [2024-08-14 02:32:13,459 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 02:32:13 WrapperNode [2024-08-14 02:32:13,460 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-08-14 02:32:13,461 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-08-14 02:32:13,461 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-08-14 02:32:13,461 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-08-14 02:32:13,469 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 14.08 02:32:13" (1/1) ... [2024-08-14 02:32:13,486 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 14.08 02:32:13" (1/1) ... [2024-08-14 02:32:13,509 INFO L138 Inliner]: procedures = 171, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 93 [2024-08-14 02:32:13,510 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-08-14 02:32:13,510 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-08-14 02:32:13,510 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-08-14 02:32:13,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-08-14 02:32:13,520 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 02:32:13" (1/1) ... [2024-08-14 02:32:13,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 02:32:13" (1/1) ... [2024-08-14 02:32:13,523 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 02:32:13" (1/1) ... [2024-08-14 02:32:13,523 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 02:32:13" (1/1) ... [2024-08-14 02:32:13,531 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 02:32:13" (1/1) ... [2024-08-14 02:32:13,535 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 02:32:13" (1/1) ... [2024-08-14 02:32:13,537 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 02:32:13" (1/1) ... [2024-08-14 02:32:13,538 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 02:32:13" (1/1) ... [2024-08-14 02:32:13,541 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-08-14 02:32:13,546 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-08-14 02:32:13,546 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-08-14 02:32:13,546 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-08-14 02:32:13,547 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 02:32:13" (1/1) ... [2024-08-14 02:32:13,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-08-14 02:32:13,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 02:32:13,572 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) [2024-08-14 02:32:13,574 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 [2024-08-14 02:32:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-08-14 02:32:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-08-14 02:32:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-08-14 02:32:13,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-08-14 02:32:13,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-08-14 02:32:13,607 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-08-14 02:32:13,607 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-08-14 02:32:13,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-08-14 02:32:13,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-08-14 02:32:13,608 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-08-14 02:32:13,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-08-14 02:32:13,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-08-14 02:32:13,609 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-08-14 02:32:13,730 INFO L244 CfgBuilder]: Building ICFG [2024-08-14 02:32:13,732 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-08-14 02:32:14,000 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-08-14 02:32:14,000 INFO L293 CfgBuilder]: Performing block encoding [2024-08-14 02:32:14,207 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-08-14 02:32:14,207 INFO L320 CfgBuilder]: Removed 10 assume(true) statements. [2024-08-14 02:32:14,208 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.08 02:32:14 BoogieIcfgContainer [2024-08-14 02:32:14,208 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-08-14 02:32:14,211 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-08-14 02:32:14,211 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-08-14 02:32:14,215 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-08-14 02:32:14,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.08 02:32:12" (1/4) ... [2024-08-14 02:32:14,215 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185727bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.08 02:32:14, skipping insertion in model container [2024-08-14 02:32:14,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.08 02:32:12" (2/4) ... [2024-08-14 02:32:14,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185727bf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.08 02:32:14, skipping insertion in model container [2024-08-14 02:32:14,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 02:32:13" (3/4) ... [2024-08-14 02:32:14,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185727bf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.08 02:32:14, skipping insertion in model container [2024-08-14 02:32:14,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.08 02:32:14" (4/4) ... [2024-08-14 02:32:14,219 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_24-sound_lock_racing.i [2024-08-14 02:32:14,239 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-08-14 02:32:14,240 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-08-14 02:32:14,240 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-08-14 02:32:14,280 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-08-14 02:32:14,323 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 02:32:14,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 02:32:14,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 02:32:14,326 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) [2024-08-14 02:32:14,327 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 [2024-08-14 02:32:14,364 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 02:32:14,378 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread1of1ForFork0 ======== [2024-08-14 02:32:14,387 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c9ec5cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 02:32:14,388 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 02:32:14,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:14,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:14,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1636069680, now seen corresponding path program 1 times [2024-08-14 02:32:14,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:14,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139099591] [2024-08-14 02:32:14,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:14,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:14,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-08-14 02:32:14,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:14,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139099591] [2024-08-14 02:32:14,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139099591] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:14,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:14,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 02:32:14,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070262638] [2024-08-14 02:32:14,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:14,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 02:32:14,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:14,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 02:32:14,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 02:32:14,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:14,798 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:14,799 INFO L496 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) [2024-08-14 02:32:14,800 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:14,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:14,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-08-14 02:32:14,830 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:14,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:14,831 INFO L85 PathProgramCache]: Analyzing trace with hash 362866536, now seen corresponding path program 1 times [2024-08-14 02:32:14,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:14,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036668229] [2024-08-14 02:32:14,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:14,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-08-14 02:32:14,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:14,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036668229] [2024-08-14 02:32:14,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036668229] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:14,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:14,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-08-14 02:32:14,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012899551] [2024-08-14 02:32:14,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:14,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 02:32:14,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:14,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 02:32:14,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 02:32:14,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:14,945 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:14,945 INFO L496 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) [2024-08-14 02:32:14,945 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:14,945 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:14,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:14,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:14,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-08-14 02:32:14,993 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:14,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:14,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1751681057, now seen corresponding path program 1 times [2024-08-14 02:32:14,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:14,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646834573] [2024-08-14 02:32:14,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:14,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:15,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:15,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-08-14 02:32:15,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:15,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646834573] [2024-08-14 02:32:15,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646834573] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:15,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:15,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 02:32:15,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675071038] [2024-08-14 02:32:15,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:15,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 02:32:15,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:15,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 02:32:15,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-08-14 02:32:15,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:15,161 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:15,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2024-08-14 02:32:15,161 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:15,161 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:15,161 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:15,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:15,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:15,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:15,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 2 remaining) [2024-08-14 02:32:15,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 2 remaining) [2024-08-14 02:32:15,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-08-14 02:32:15,659 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-08-14 02:32:15,660 INFO L308 ceAbstractionStarter]: Result for error location t_funThread1of1ForFork0 was SAFE,SAFE (1/2) [2024-08-14 02:32:15,666 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 02:32:15,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 02:32:15,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 02:32:15,670 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) [2024-08-14 02:32:15,672 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 [2024-08-14 02:32:15,675 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 02:32:15,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 02:32:15,679 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c9ec5cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 02:32:15,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 02:32:15,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 02:32:15,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:15,732 INFO L85 PathProgramCache]: Analyzing trace with hash 980922219, now seen corresponding path program 1 times [2024-08-14 02:32:15,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:15,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559804172] [2024-08-14 02:32:15,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:15,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:15,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-14 02:32:15,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:15,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559804172] [2024-08-14 02:32:15,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559804172] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:15,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:15,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 02:32:15,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689924785] [2024-08-14 02:32:15,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:15,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 02:32:15,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:15,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 02:32:15,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 02:32:15,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:15,777 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:15,777 INFO L496 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) [2024-08-14 02:32:15,777 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:15,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:15,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-08-14 02:32:15,813 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 02:32:15,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:15,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2016661577, now seen corresponding path program 1 times [2024-08-14 02:32:15,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:15,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932859916] [2024-08-14 02:32:15,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:15,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 02:32:15,840 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 02:32:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 02:32:15,881 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 02:32:15,882 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 02:32:15,882 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 02:32:15,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 2 remaining) [2024-08-14 02:32:15,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-08-14 02:32:15,885 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-08-14 02:32:15,886 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (2/2) [2024-08-14 02:32:15,887 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 02:32:15,887 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-08-14 02:32:15,939 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-08-14 02:32:15,941 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 02:32:15,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 02:32:15,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 02:32:15,955 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) [2024-08-14 02:32:15,965 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 [2024-08-14 02:32:15,974 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 02:32:15,975 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread1of2ForFork0 ======== [2024-08-14 02:32:15,975 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c9ec5cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 02:32:15,975 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 02:32:16,279 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:16,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:16,280 INFO L85 PathProgramCache]: Analyzing trace with hash -188883212, now seen corresponding path program 1 times [2024-08-14 02:32:16,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:16,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285970800] [2024-08-14 02:32:16,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:16,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:16,376 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-08-14 02:32:16,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:16,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285970800] [2024-08-14 02:32:16,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285970800] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:16,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:16,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 02:32:16,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730491625] [2024-08-14 02:32:16,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:16,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 02:32:16,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:16,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 02:32:16,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 02:32:16,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:16,379 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:16,379 INFO L496 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) [2024-08-14 02:32:16,380 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:16,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:16,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-08-14 02:32:16,411 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:16,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:16,412 INFO L85 PathProgramCache]: Analyzing trace with hash -151759475, now seen corresponding path program 1 times [2024-08-14 02:32:16,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:16,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685810108] [2024-08-14 02:32:16,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:16,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:16,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-08-14 02:32:16,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:16,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685810108] [2024-08-14 02:32:16,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685810108] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:16,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:16,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-08-14 02:32:16,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288297844] [2024-08-14 02:32:16,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:16,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 02:32:16,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:16,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 02:32:16,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 02:32:16,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:16,443 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:16,443 INFO L496 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) [2024-08-14 02:32:16,443 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:16,444 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:16,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:16,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:16,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-08-14 02:32:16,506 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:16,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:16,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1274449655, now seen corresponding path program 1 times [2024-08-14 02:32:16,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:16,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999034577] [2024-08-14 02:32:16,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:16,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:16,610 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-08-14 02:32:16,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:16,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999034577] [2024-08-14 02:32:16,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999034577] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-14 02:32:16,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833683537] [2024-08-14 02:32:16,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:16,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-14 02:32:16,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 02:32:16,614 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) [2024-08-14 02:32:16,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-08-14 02:32:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:16,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 5 conjunts are in the unsatisfiable core [2024-08-14 02:32:16,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-08-14 02:32:16,797 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-08-14 02:32:16,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-08-14 02:32:16,849 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-08-14 02:32:16,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833683537] provided 0 perfect and 2 imperfect interpolant sequences [2024-08-14 02:32:16,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-08-14 02:32:16,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-08-14 02:32:16,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52059656] [2024-08-14 02:32:16,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-08-14 02:32:16,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 02:32:16,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:16,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 02:32:16,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-08-14 02:32:16,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:16,855 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:16,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2024-08-14 02:32:16,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:16,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:16,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:17,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:17,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:17,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:17,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-08-14 02:32:17,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-14 02:32:17,928 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:17,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:17,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1042591097, now seen corresponding path program 1 times [2024-08-14 02:32:17,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:17,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441232805] [2024-08-14 02:32:17,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:17,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:18,006 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-14 02:32:18,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:18,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441232805] [2024-08-14 02:32:18,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441232805] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-14 02:32:18,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230548653] [2024-08-14 02:32:18,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:18,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-14 02:32:18,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 02:32:18,009 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) [2024-08-14 02:32:18,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-08-14 02:32:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:18,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 4 conjunts are in the unsatisfiable core [2024-08-14 02:32:18,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-08-14 02:32:18,151 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-14 02:32:18,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-08-14 02:32:18,237 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-14 02:32:18,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230548653] provided 0 perfect and 2 imperfect interpolant sequences [2024-08-14 02:32:18,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-08-14 02:32:18,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-08-14 02:32:18,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293556488] [2024-08-14 02:32:18,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-08-14 02:32:18,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-08-14 02:32:18,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:18,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-08-14 02:32:18,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-08-14 02:32:18,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:18,241 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:18,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 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) [2024-08-14 02:32:18,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:18,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:18,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:18,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:18,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:18,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:18,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:18,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-08-14 02:32:18,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-08-14 02:32:18,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-08-14 02:32:18,646 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:18,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:18,646 INFO L85 PathProgramCache]: Analyzing trace with hash -332639157, now seen corresponding path program 1 times [2024-08-14 02:32:18,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:18,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858762137] [2024-08-14 02:32:18,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:18,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:18,719 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-08-14 02:32:18,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:18,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858762137] [2024-08-14 02:32:18,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858762137] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:18,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:18,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 02:32:18,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408182709] [2024-08-14 02:32:18,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:18,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 02:32:18,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:18,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 02:32:18,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 02:32:18,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:18,723 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:18,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 02:32:18,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:18,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:18,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:18,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-08-14 02:32:18,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:18,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:18,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:18,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:18,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-08-14 02:32:18,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:18,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-08-14 02:32:18,813 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:18,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:18,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1421603377, now seen corresponding path program 1 times [2024-08-14 02:32:18,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:18,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215306197] [2024-08-14 02:32:18,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:18,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:18,958 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-08-14 02:32:18,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:18,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215306197] [2024-08-14 02:32:18,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215306197] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:18,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:18,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 02:32:18,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031152888] [2024-08-14 02:32:18,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:18,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 02:32:18,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:18,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 02:32:18,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 02:32:18,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:18,961 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:18,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 02:32:18,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:18,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:18,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:18,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-08-14 02:32:18,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:18,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:19,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:19,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:19,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:19,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-08-14 02:32:19,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:19,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:19,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 2 remaining) [2024-08-14 02:32:19,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 2 remaining) [2024-08-14 02:32:19,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-08-14 02:32:19,081 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-08-14 02:32:19,081 INFO L308 ceAbstractionStarter]: Result for error location t_funThread1of2ForFork0 was SAFE,SAFE (1/3) [2024-08-14 02:32:19,083 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 02:32:19,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 02:32:19,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 02:32:19,085 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) [2024-08-14 02:32:19,087 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 [2024-08-14 02:32:19,089 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 02:32:19,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 02:32:19,090 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c9ec5cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 02:32:19,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 02:32:19,156 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 02:32:19,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:19,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1904636290, now seen corresponding path program 1 times [2024-08-14 02:32:19,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:19,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924704639] [2024-08-14 02:32:19,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:19,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:19,195 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-08-14 02:32:19,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:19,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924704639] [2024-08-14 02:32:19,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924704639] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:19,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:19,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 02:32:19,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580389248] [2024-08-14 02:32:19,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:19,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 02:32:19,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:19,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 02:32:19,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 02:32:19,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:19,200 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:19,200 INFO L496 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) [2024-08-14 02:32:19,200 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:19,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:19,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-08-14 02:32:19,254 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 02:32:19,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:19,255 INFO L85 PathProgramCache]: Analyzing trace with hash -158838206, now seen corresponding path program 1 times [2024-08-14 02:32:19,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:19,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192168278] [2024-08-14 02:32:19,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:19,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:19,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-14 02:32:19,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:19,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192168278] [2024-08-14 02:32:19,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192168278] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:19,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:19,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 02:32:19,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943857990] [2024-08-14 02:32:19,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:19,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 02:32:19,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:19,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 02:32:19,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 02:32:19,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:19,341 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:19,341 INFO L496 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) [2024-08-14 02:32:19,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:19,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:19,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:19,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:19,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-08-14 02:32:19,368 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 02:32:19,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:19,368 INFO L85 PathProgramCache]: Analyzing trace with hash 188046441, now seen corresponding path program 1 times [2024-08-14 02:32:19,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:19,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881219191] [2024-08-14 02:32:19,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:19,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:19,404 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-08-14 02:32:19,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:19,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881219191] [2024-08-14 02:32:19,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881219191] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:19,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:19,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 02:32:19,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87873307] [2024-08-14 02:32:19,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:19,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 02:32:19,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:19,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 02:32:19,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 02:32:19,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:19,406 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:19,406 INFO L496 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) [2024-08-14 02:32:19,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:19,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:19,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:19,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:19,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:19,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:19,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-08-14 02:32:19,475 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 02:32:19,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:19,475 INFO L85 PathProgramCache]: Analyzing trace with hash -752177479, now seen corresponding path program 1 times [2024-08-14 02:32:19,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:19,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092168754] [2024-08-14 02:32:19,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:19,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:19,630 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-08-14 02:32:19,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:19,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092168754] [2024-08-14 02:32:19,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092168754] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:19,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:19,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-08-14 02:32:19,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678576707] [2024-08-14 02:32:19,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:19,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-08-14 02:32:19,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:19,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-08-14 02:32:19,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-08-14 02:32:19,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:19,632 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:19,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 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) [2024-08-14 02:32:19,633 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:19,633 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:19,633 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:19,633 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:19,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:19,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:19,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:19,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:19,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-08-14 02:32:19,663 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 02:32:19,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:19,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1505359832, now seen corresponding path program 1 times [2024-08-14 02:32:19,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:19,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257930757] [2024-08-14 02:32:19,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:19,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 02:32:19,682 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 02:32:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 02:32:19,698 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 02:32:19,700 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 02:32:19,700 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 02:32:19,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 2 remaining) [2024-08-14 02:32:19,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-08-14 02:32:19,704 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-08-14 02:32:19,705 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (2/3) [2024-08-14 02:32:19,705 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 02:32:19,705 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-08-14 02:32:19,728 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-08-14 02:32:19,730 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 02:32:19,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 02:32:19,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 02:32:19,732 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) [2024-08-14 02:32:19,733 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 [2024-08-14 02:32:19,736 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 02:32:19,736 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-14 02:32:19,736 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c9ec5cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 02:32:19,736 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 02:32:19,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 02:32:19,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:19,847 INFO L85 PathProgramCache]: Analyzing trace with hash -801874324, now seen corresponding path program 1 times [2024-08-14 02:32:19,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:19,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813449445] [2024-08-14 02:32:19,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:19,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:19,872 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-08-14 02:32:19,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:19,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813449445] [2024-08-14 02:32:19,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813449445] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:19,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:19,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 02:32:19,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457019543] [2024-08-14 02:32:19,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:19,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 02:32:19,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:19,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 02:32:19,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 02:32:19,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:19,874 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:19,874 INFO L496 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) [2024-08-14 02:32:19,875 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:19,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:19,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-08-14 02:32:19,950 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 02:32:19,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:19,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1443363704, now seen corresponding path program 1 times [2024-08-14 02:32:19,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:19,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882371689] [2024-08-14 02:32:19,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:19,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-08-14 02:32:20,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:20,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882371689] [2024-08-14 02:32:20,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882371689] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:20,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:20,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 02:32:20,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497850047] [2024-08-14 02:32:20,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:20,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 02:32:20,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:20,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 02:32:20,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 02:32:20,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:20,010 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:20,010 INFO L496 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) [2024-08-14 02:32:20,010 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:20,010 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:20,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:20,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:20,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-08-14 02:32:20,043 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 02:32:20,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:20,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1520813375, now seen corresponding path program 1 times [2024-08-14 02:32:20,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:20,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844523731] [2024-08-14 02:32:20,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:20,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:20,070 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-08-14 02:32:20,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:20,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844523731] [2024-08-14 02:32:20,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844523731] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:20,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:20,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 02:32:20,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661838278] [2024-08-14 02:32:20,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:20,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 02:32:20,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:20,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 02:32:20,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 02:32:20,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:20,073 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:20,073 INFO L496 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) [2024-08-14 02:32:20,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:20,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:20,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:20,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-08-14 02:32:20,153 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 02:32:20,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:20,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1838937954, now seen corresponding path program 1 times [2024-08-14 02:32:20,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:20,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628929759] [2024-08-14 02:32:20,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:20,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:20,233 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-08-14 02:32:20,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:20,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628929759] [2024-08-14 02:32:20,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628929759] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-14 02:32:20,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971556454] [2024-08-14 02:32:20,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:20,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-14 02:32:20,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 02:32:20,236 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) [2024-08-14 02:32:20,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-08-14 02:32:20,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:20,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2024-08-14 02:32:20,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-08-14 02:32:20,379 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-08-14 02:32:20,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-08-14 02:32:20,410 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-08-14 02:32:20,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971556454] provided 0 perfect and 2 imperfect interpolant sequences [2024-08-14 02:32:20,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-08-14 02:32:20,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-08-14 02:32:20,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248299202] [2024-08-14 02:32:20,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-08-14 02:32:20,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 02:32:20,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:20,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 02:32:20,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-08-14 02:32:20,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:20,412 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:20,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) 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) [2024-08-14 02:32:20,413 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:20,413 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:20,413 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:20,413 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:20,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:20,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:20,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:20,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:20,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-08-14 02:32:20,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-14 02:32:20,693 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 02:32:20,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:20,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1376093190, now seen corresponding path program 1 times [2024-08-14 02:32:20,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:20,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705027732] [2024-08-14 02:32:20,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:20,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:20,839 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-08-14 02:32:20,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:20,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705027732] [2024-08-14 02:32:20,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705027732] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:20,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:20,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-08-14 02:32:20,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679721349] [2024-08-14 02:32:20,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:20,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-08-14 02:32:20,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:20,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-08-14 02:32:20,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-08-14 02:32:20,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:20,841 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:20,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 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) [2024-08-14 02:32:20,842 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:20,842 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:20,842 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:20,842 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:20,842 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:20,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:20,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:20,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:20,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:20,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:20,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-08-14 02:32:20,900 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-14 02:32:20,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:20,901 INFO L85 PathProgramCache]: Analyzing trace with hash -452868432, now seen corresponding path program 1 times [2024-08-14 02:32:20,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:20,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922479946] [2024-08-14 02:32:20,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:20,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 02:32:20,924 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 02:32:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 02:32:20,950 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 02:32:20,951 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 02:32:20,951 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-08-14 02:32:20,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 2 remaining) [2024-08-14 02:32:20,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-08-14 02:32:20,952 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-08-14 02:32:20,953 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (1/4) [2024-08-14 02:32:20,953 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-08-14 02:32:20,953 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-08-14 02:32:20,977 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-08-14 02:32:20,979 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 02:32:20,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 02:32:20,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 02:32:20,982 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) [2024-08-14 02:32:20,983 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 [2024-08-14 02:32:20,987 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 02:32:20,987 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread4of4ForFork0 ======== [2024-08-14 02:32:20,988 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c9ec5cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 02:32:20,988 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 02:32:21,136 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:21,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:21,137 INFO L85 PathProgramCache]: Analyzing trace with hash -769146369, now seen corresponding path program 1 times [2024-08-14 02:32:21,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:21,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144486042] [2024-08-14 02:32:21,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:21,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:21,158 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-08-14 02:32:21,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:21,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144486042] [2024-08-14 02:32:21,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144486042] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:21,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:21,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 02:32:21,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537348231] [2024-08-14 02:32:21,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:21,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 02:32:21,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:21,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 02:32:21,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 02:32:21,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:21,161 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:21,161 INFO L496 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) [2024-08-14 02:32:21,161 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:21,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:21,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-08-14 02:32:21,276 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:21,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:21,277 INFO L85 PathProgramCache]: Analyzing trace with hash 764098620, now seen corresponding path program 1 times [2024-08-14 02:32:21,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:21,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498814940] [2024-08-14 02:32:21,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:21,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:21,378 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-08-14 02:32:21,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:21,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498814940] [2024-08-14 02:32:21,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498814940] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:21,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:21,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 02:32:21,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758432091] [2024-08-14 02:32:21,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:21,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 02:32:21,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:21,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 02:32:21,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 02:32:21,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:21,380 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:21,380 INFO L496 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) [2024-08-14 02:32:21,380 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:21,380 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:21,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:21,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:21,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-08-14 02:32:21,563 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:21,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:21,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1408753068, now seen corresponding path program 1 times [2024-08-14 02:32:21,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:21,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086387626] [2024-08-14 02:32:21,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:21,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:21,609 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-08-14 02:32:21,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:21,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086387626] [2024-08-14 02:32:21,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086387626] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:21,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:21,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 02:32:21,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440349779] [2024-08-14 02:32:21,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:21,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 02:32:21,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:21,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 02:32:21,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 02:32:21,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:21,612 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:21,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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) [2024-08-14 02:32:21,612 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:21,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:21,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:21,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:21,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:21,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:21,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-08-14 02:32:21,758 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:21,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:21,759 INFO L85 PathProgramCache]: Analyzing trace with hash -980054782, now seen corresponding path program 1 times [2024-08-14 02:32:21,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:21,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296166617] [2024-08-14 02:32:21,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:21,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:21,812 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-08-14 02:32:21,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:21,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296166617] [2024-08-14 02:32:21,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296166617] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:21,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:21,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-08-14 02:32:21,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866910088] [2024-08-14 02:32:21,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:21,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 02:32:21,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:21,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 02:32:21,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 02:32:21,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:21,815 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:21,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2024-08-14 02:32:21,815 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:21,815 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:21,815 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:21,815 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:21,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:21,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:21,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:21,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:21,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-08-14 02:32:21,951 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:21,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:21,951 INFO L85 PathProgramCache]: Analyzing trace with hash -591259357, now seen corresponding path program 1 times [2024-08-14 02:32:21,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:21,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424750429] [2024-08-14 02:32:21,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:21,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:22,017 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-08-14 02:32:22,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:22,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424750429] [2024-08-14 02:32:22,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424750429] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:22,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:22,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 02:32:22,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644223901] [2024-08-14 02:32:22,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:22,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 02:32:22,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:22,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 02:32:22,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 02:32:22,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:22,019 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:22,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 02:32:22,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:22,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:22,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:22,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:22,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:22,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:22,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:22,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:22,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:22,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:22,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-08-14 02:32:22,168 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:22,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:22,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1918970379, now seen corresponding path program 1 times [2024-08-14 02:32:22,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:22,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399080993] [2024-08-14 02:32:22,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:22,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:22,310 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-08-14 02:32:22,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:22,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399080993] [2024-08-14 02:32:22,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399080993] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:22,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:22,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 02:32:22,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486965439] [2024-08-14 02:32:22,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:22,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 02:32:22,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:22,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 02:32:22,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 02:32:22,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:22,314 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:22,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 02:32:22,314 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:22,314 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:22,314 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:22,314 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:22,314 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:22,314 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:22,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:22,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:22,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:22,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:22,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:22,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:22,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-08-14 02:32:22,500 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:22,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:22,501 INFO L85 PathProgramCache]: Analyzing trace with hash -788015923, now seen corresponding path program 1 times [2024-08-14 02:32:22,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:22,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184571421] [2024-08-14 02:32:22,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:22,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:22,584 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-08-14 02:32:22,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:22,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184571421] [2024-08-14 02:32:22,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184571421] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:22,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:22,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 02:32:22,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055428872] [2024-08-14 02:32:22,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:22,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 02:32:22,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:22,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 02:32:22,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 02:32:22,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:22,586 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:22,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 39.0) internal successors, (78), 3 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) [2024-08-14 02:32:22,586 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:22,586 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:22,586 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:22,586 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:22,586 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:22,586 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:22,586 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:22,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:22,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:22,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:22,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:22,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:22,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:22,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:22,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-08-14 02:32:22,726 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:22,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:22,726 INFO L85 PathProgramCache]: Analyzing trace with hash -846347504, now seen corresponding path program 1 times [2024-08-14 02:32:22,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:22,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289932997] [2024-08-14 02:32:22,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:22,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-08-14 02:32:22,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:22,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289932997] [2024-08-14 02:32:22,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289932997] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:22,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:22,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 02:32:22,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572524538] [2024-08-14 02:32:22,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:22,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 02:32:22,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:22,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 02:32:22,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 02:32:22,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:22,898 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:22,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 02:32:22,898 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:22,898 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:22,898 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:22,898 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:22,899 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:22,899 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:22,899 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:22,899 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:23,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:23,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:23,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:23,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:23,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:23,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:23,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:23,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:23,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-08-14 02:32:23,520 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:23,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:23,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1969927575, now seen corresponding path program 1 times [2024-08-14 02:32:23,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:23,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330530302] [2024-08-14 02:32:23,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:23,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:23,679 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-08-14 02:32:23,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:23,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330530302] [2024-08-14 02:32:23,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330530302] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-14 02:32:23,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671059240] [2024-08-14 02:32:23,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:23,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-14 02:32:23,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 02:32:23,683 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) [2024-08-14 02:32:23,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-08-14 02:32:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:23,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 6 conjunts are in the unsatisfiable core [2024-08-14 02:32:23,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-08-14 02:32:23,913 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-08-14 02:32:23,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-08-14 02:32:24,011 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-08-14 02:32:24,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671059240] provided 0 perfect and 2 imperfect interpolant sequences [2024-08-14 02:32:24,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-08-14 02:32:24,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-08-14 02:32:24,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689137973] [2024-08-14 02:32:24,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-08-14 02:32:24,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-08-14 02:32:24,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:24,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-08-14 02:32:24,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-08-14 02:32:24,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:24,014 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:24,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.923076923076923) internal successors, (129), 12 states have internal predecessors, (129), 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) [2024-08-14 02:32:24,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:24,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:24,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:24,015 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:24,015 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:24,015 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:24,015 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:24,016 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:24,016 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:25,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:25,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:25,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:25,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:25,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:25,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:25,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:25,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:25,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-08-14 02:32:25,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 2 remaining) [2024-08-14 02:32:25,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 2 remaining) [2024-08-14 02:32:25,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-08-14 02:32:26,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-08-14 02:32:26,099 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-08-14 02:32:26,099 INFO L308 ceAbstractionStarter]: Result for error location t_funThread4of4ForFork0 was SAFE,SAFE (1/5) [2024-08-14 02:32:26,102 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 02:32:26,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 02:32:26,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 02:32:26,104 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-08-14 02:32:26,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (12)] Waiting until timeout for monitored process [2024-08-14 02:32:26,112 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 02:32:26,112 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread2of4ForFork0 ======== [2024-08-14 02:32:26,113 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c9ec5cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 02:32:26,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 02:32:27,074 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:27,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:27,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1656627079, now seen corresponding path program 1 times [2024-08-14 02:32:27,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:27,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154660953] [2024-08-14 02:32:27,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:27,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:27,095 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-08-14 02:32:27,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:27,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154660953] [2024-08-14 02:32:27,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154660953] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:27,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:27,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 02:32:27,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769642983] [2024-08-14 02:32:27,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:27,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 02:32:27,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:27,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 02:32:27,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 02:32:27,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:27,098 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:27,098 INFO L496 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) [2024-08-14 02:32:27,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:27,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:27,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-08-14 02:32:27,160 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:27,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:27,161 INFO L85 PathProgramCache]: Analyzing trace with hash -205410888, now seen corresponding path program 1 times [2024-08-14 02:32:27,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:27,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37208108] [2024-08-14 02:32:27,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:27,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:27,208 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-08-14 02:32:27,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:27,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37208108] [2024-08-14 02:32:27,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37208108] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:27,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:27,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 02:32:27,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947226027] [2024-08-14 02:32:27,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:27,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 02:32:27,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:27,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 02:32:27,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 02:32:27,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:27,211 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:27,211 INFO L496 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) [2024-08-14 02:32:27,211 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:27,211 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:27,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:27,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:27,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-08-14 02:32:27,418 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:27,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:27,419 INFO L85 PathProgramCache]: Analyzing trace with hash 338189536, now seen corresponding path program 1 times [2024-08-14 02:32:27,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:27,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546669993] [2024-08-14 02:32:27,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:27,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:27,451 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-08-14 02:32:27,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:27,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546669993] [2024-08-14 02:32:27,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546669993] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:27,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:27,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 02:32:27,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953782088] [2024-08-14 02:32:27,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:27,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 02:32:27,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:27,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 02:32:27,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 02:32:27,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:27,453 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:27,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 02:32:27,453 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:27,453 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:27,453 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:27,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:27,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:27,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:27,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-08-14 02:32:27,539 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:27,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:27,539 INFO L85 PathProgramCache]: Analyzing trace with hash -215172843, now seen corresponding path program 1 times [2024-08-14 02:32:27,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:27,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701100978] [2024-08-14 02:32:27,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:27,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:27,592 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-08-14 02:32:27,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:27,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701100978] [2024-08-14 02:32:27,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701100978] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:27,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:27,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 02:32:27,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257995837] [2024-08-14 02:32:27,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:27,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 02:32:27,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:27,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 02:32:27,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 02:32:27,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:27,594 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:27,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2024-08-14 02:32:27,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:27,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:27,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:27,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:27,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:27,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:27,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:27,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:27,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-08-14 02:32:27,731 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:27,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:27,732 INFO L85 PathProgramCache]: Analyzing trace with hash 728728775, now seen corresponding path program 1 times [2024-08-14 02:32:27,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:27,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513675401] [2024-08-14 02:32:27,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:27,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:27,794 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-08-14 02:32:27,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:27,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513675401] [2024-08-14 02:32:27,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513675401] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:27,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:27,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 02:32:27,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827879645] [2024-08-14 02:32:27,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:27,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 02:32:27,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:27,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 02:32:27,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 02:32:27,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:27,796 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:27,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-08-14 02:32:27,796 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:27,796 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:27,796 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:27,796 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:27,796 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:28,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:28,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:28,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:28,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:28,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:28,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-08-14 02:32:28,796 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:28,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:28,796 INFO L85 PathProgramCache]: Analyzing trace with hash 2060013557, now seen corresponding path program 1 times [2024-08-14 02:32:28,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:28,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969416350] [2024-08-14 02:32:28,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:28,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:28,936 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-08-14 02:32:28,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:28,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969416350] [2024-08-14 02:32:28,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969416350] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:28,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:28,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 02:32:28,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480676238] [2024-08-14 02:32:28,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:28,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 02:32:28,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:28,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 02:32:28,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 02:32:28,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:28,938 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:28,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-08-14 02:32:28,939 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:28,939 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:28,939 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:28,939 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:28,939 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:28,939 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:29,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:29,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:29,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:29,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:29,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:29,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:29,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-08-14 02:32:29,710 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:29,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:29,711 INFO L85 PathProgramCache]: Analyzing trace with hash -99524909, now seen corresponding path program 1 times [2024-08-14 02:32:29,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:29,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209590251] [2024-08-14 02:32:29,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:29,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:29,805 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-14 02:32:29,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:29,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209590251] [2024-08-14 02:32:29,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209590251] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-14 02:32:29,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984196907] [2024-08-14 02:32:29,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:29,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-14 02:32:29,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 02:32:29,808 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-08-14 02:32:29,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-08-14 02:32:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:29,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 6 conjunts are in the unsatisfiable core [2024-08-14 02:32:29,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-08-14 02:32:30,024 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-14 02:32:30,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-08-14 02:32:30,117 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-14 02:32:30,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984196907] provided 0 perfect and 2 imperfect interpolant sequences [2024-08-14 02:32:30,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-08-14 02:32:30,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-08-14 02:32:30,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042019756] [2024-08-14 02:32:30,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-08-14 02:32:30,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-08-14 02:32:30,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:30,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-08-14 02:32:30,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-08-14 02:32:30,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:30,119 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:30,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 12 states have internal predecessors, (107), 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) [2024-08-14 02:32:30,119 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:30,119 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:30,119 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:30,119 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:30,119 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:30,119 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:30,120 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:31,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:31,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:31,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:31,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:31,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:31,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:31,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-08-14 02:32:31,999 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 2 remaining) [2024-08-14 02:32:31,999 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 2 remaining) [2024-08-14 02:32:32,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-08-14 02:32:32,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-08-14 02:32:32,201 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-08-14 02:32:32,201 INFO L308 ceAbstractionStarter]: Result for error location t_funThread2of4ForFork0 was SAFE,SAFE (2/5) [2024-08-14 02:32:32,205 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 02:32:32,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 02:32:32,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 02:32:32,208 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-08-14 02:32:32,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (14)] Waiting until timeout for monitored process [2024-08-14 02:32:32,211 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 02:32:32,212 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread3of4ForFork0 ======== [2024-08-14 02:32:32,212 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c9ec5cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 02:32:32,212 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 02:32:32,438 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:32,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:32,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1676369581, now seen corresponding path program 1 times [2024-08-14 02:32:32,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:32,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339963234] [2024-08-14 02:32:32,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:32,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:32,465 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-08-14 02:32:32,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:32,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339963234] [2024-08-14 02:32:32,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339963234] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:32,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:32,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 02:32:32,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907963142] [2024-08-14 02:32:32,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:32,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-14 02:32:32,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:32,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-14 02:32:32,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-14 02:32:32,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:32,467 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:32,467 INFO L496 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) [2024-08-14 02:32:32,467 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:32,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:32,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-08-14 02:32:32,551 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:32,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:32,551 INFO L85 PathProgramCache]: Analyzing trace with hash 46522503, now seen corresponding path program 1 times [2024-08-14 02:32:32,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:32,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963967494] [2024-08-14 02:32:32,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:32,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:32,609 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-08-14 02:32:32,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:32,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963967494] [2024-08-14 02:32:32,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963967494] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:32,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:32,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 02:32:32,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003669404] [2024-08-14 02:32:32,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:32,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 02:32:32,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:32,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 02:32:32,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 02:32:32,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:32,611 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:32,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 02:32:32,611 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:32,611 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:32,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:32,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:32,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-08-14 02:32:32,749 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:32,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:32,749 INFO L85 PathProgramCache]: Analyzing trace with hash -988071509, now seen corresponding path program 1 times [2024-08-14 02:32:32,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:32,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002567147] [2024-08-14 02:32:32,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:32,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:32,779 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-08-14 02:32:32,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:32,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002567147] [2024-08-14 02:32:32,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002567147] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:32,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:32,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 02:32:32,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3734638] [2024-08-14 02:32:32,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:32,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 02:32:32,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:32,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 02:32:32,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 02:32:32,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:32,781 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:32,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 02:32:32,781 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:32,781 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:32,781 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:32,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:32,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:32,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:32,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-08-14 02:32:32,921 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:32,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:32,922 INFO L85 PathProgramCache]: Analyzing trace with hash 376408555, now seen corresponding path program 1 times [2024-08-14 02:32:32,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:32,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400861439] [2024-08-14 02:32:32,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:32,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:32,970 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-08-14 02:32:32,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:32,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400861439] [2024-08-14 02:32:32,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400861439] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:32,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:32,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-08-14 02:32:32,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662637910] [2024-08-14 02:32:32,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:32,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 02:32:32,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:32,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 02:32:32,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 02:32:32,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:32,974 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:32,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-08-14 02:32:32,974 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:32,974 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:32,974 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:32,974 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:33,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:33,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:33,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:33,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:33,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-08-14 02:32:33,078 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:33,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:33,078 INFO L85 PathProgramCache]: Analyzing trace with hash 880914338, now seen corresponding path program 1 times [2024-08-14 02:32:33,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:33,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719764674] [2024-08-14 02:32:33,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:33,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:33,126 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-08-14 02:32:33,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:33,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719764674] [2024-08-14 02:32:33,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719764674] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:33,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:33,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 02:32:33,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626845861] [2024-08-14 02:32:33,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:33,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 02:32:33,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:33,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 02:32:33,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 02:32:33,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:33,130 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:33,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-08-14 02:32:33,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:33,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:33,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:33,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:33,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:33,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:33,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:33,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:33,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:33,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:33,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-08-14 02:32:33,262 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:33,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:33,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1500007324, now seen corresponding path program 1 times [2024-08-14 02:32:33,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:33,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363946092] [2024-08-14 02:32:33,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:33,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:33,326 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-08-14 02:32:33,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:33,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363946092] [2024-08-14 02:32:33,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363946092] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:33,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:33,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 02:32:33,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594180513] [2024-08-14 02:32:33,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:33,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 02:32:33,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:33,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 02:32:33,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 02:32:33,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:33,328 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:33,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 02:32:33,328 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:33,328 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:33,328 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:33,328 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:33,328 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:33,328 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:33,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:33,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:33,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:33,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:33,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:33,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:33,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-08-14 02:32:33,452 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:33,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:33,452 INFO L85 PathProgramCache]: Analyzing trace with hash -846290904, now seen corresponding path program 1 times [2024-08-14 02:32:33,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:33,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986110481] [2024-08-14 02:32:33,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:33,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:33,512 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-08-14 02:32:33,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:33,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986110481] [2024-08-14 02:32:33,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986110481] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:33,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:33,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 02:32:33,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071304946] [2024-08-14 02:32:33,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:33,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 02:32:33,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:33,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 02:32:33,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 02:32:33,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:33,515 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:33,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 31.5) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-08-14 02:32:33,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:33,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:33,516 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:33,516 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:33,516 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:33,516 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:33,516 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:33,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:33,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:33,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:33,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:33,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:33,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:33,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:33,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-08-14 02:32:33,722 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:33,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:33,723 INFO L85 PathProgramCache]: Analyzing trace with hash 392059766, now seen corresponding path program 1 times [2024-08-14 02:32:33,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:33,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865822813] [2024-08-14 02:32:33,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:33,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:33,851 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-08-14 02:32:33,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:33,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865822813] [2024-08-14 02:32:33,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865822813] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:33,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:33,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 02:32:33,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712618595] [2024-08-14 02:32:33,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:33,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 02:32:33,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:33,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 02:32:33,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-08-14 02:32:33,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:33,854 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:33,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 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) [2024-08-14 02:32:33,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:33,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:33,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:33,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:33,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:33,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:33,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:33,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:34,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:34,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:34,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:34,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:34,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:34,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:34,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:34,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:34,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-08-14 02:32:34,343 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:34,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:34,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1832682753, now seen corresponding path program 1 times [2024-08-14 02:32:34,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:34,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116648385] [2024-08-14 02:32:34,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:34,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:34,442 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-08-14 02:32:34,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:34,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116648385] [2024-08-14 02:32:34,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116648385] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-14 02:32:34,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114551360] [2024-08-14 02:32:34,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:34,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-14 02:32:34,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 02:32:34,445 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-08-14 02:32:34,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-08-14 02:32:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:34,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 6 conjunts are in the unsatisfiable core [2024-08-14 02:32:34,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-08-14 02:32:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-08-14 02:32:34,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-08-14 02:32:34,764 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-08-14 02:32:34,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114551360] provided 0 perfect and 2 imperfect interpolant sequences [2024-08-14 02:32:34,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-08-14 02:32:34,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-08-14 02:32:34,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447888839] [2024-08-14 02:32:34,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-08-14 02:32:34,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-08-14 02:32:34,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:34,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-08-14 02:32:34,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-08-14 02:32:34,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:34,766 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:34,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.76923076923077) internal successors, (127), 12 states have internal predecessors, (127), 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) [2024-08-14 02:32:34,767 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:34,767 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:34,767 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:34,767 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:34,767 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:34,767 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:34,767 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:34,767 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:34,767 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:36,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:36,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:36,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:36,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:36,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:36,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:36,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:36,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-14 02:32:36,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-08-14 02:32:36,176 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 2 remaining) [2024-08-14 02:32:36,176 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 2 remaining) [2024-08-14 02:32:36,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-08-14 02:32:36,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-08-14 02:32:36,378 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-08-14 02:32:36,378 INFO L308 ceAbstractionStarter]: Result for error location t_funThread3of4ForFork0 was SAFE,SAFE (3/5) [2024-08-14 02:32:36,381 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 02:32:36,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 02:32:36,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 02:32:36,383 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-08-14 02:32:36,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (16)] Waiting until timeout for monitored process [2024-08-14 02:32:36,387 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 02:32:36,387 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread1of4ForFork0 ======== [2024-08-14 02:32:36,387 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c9ec5cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 02:32:36,387 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-08-14 02:32:53,222 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:53,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:53,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1542520293, now seen corresponding path program 1 times [2024-08-14 02:32:53,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:53,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973046826] [2024-08-14 02:32:53,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:53,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:53,304 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-08-14 02:32:53,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:53,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973046826] [2024-08-14 02:32:53,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973046826] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:53,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:53,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 02:32:53,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348451600] [2024-08-14 02:32:53,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:53,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 02:32:53,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:53,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 02:32:53,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 02:32:53,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:53,307 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:53,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 02:32:53,307 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:53,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:53,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-08-14 02:32:53,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:53,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:53,334 INFO L85 PathProgramCache]: Analyzing trace with hash 166968977, now seen corresponding path program 1 times [2024-08-14 02:32:53,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:53,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662042335] [2024-08-14 02:32:53,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:53,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:53,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-08-14 02:32:53,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:53,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662042335] [2024-08-14 02:32:53,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662042335] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 02:32:53,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 02:32:53,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-08-14 02:32:53,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139188912] [2024-08-14 02:32:53,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 02:32:53,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 02:32:53,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:53,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 02:32:53,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 02:32:53,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:53,363 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:53,363 INFO L496 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) [2024-08-14 02:32:53,363 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:53,363 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:53,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:53,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:53,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-08-14 02:32:53,433 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-14 02:32:53,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 02:32:53,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1553429607, now seen corresponding path program 1 times [2024-08-14 02:32:53,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 02:32:53,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798578358] [2024-08-14 02:32:53,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:53,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 02:32:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:53,494 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-08-14 02:32:53,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 02:32:53,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798578358] [2024-08-14 02:32:53,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798578358] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-14 02:32:53,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465595268] [2024-08-14 02:32:53,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 02:32:53,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-14 02:32:53,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 02:32:53,497 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-08-14 02:32:53,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-08-14 02:32:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 02:32:53,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2024-08-14 02:32:53,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-08-14 02:32:53,691 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-08-14 02:32:53,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-08-14 02:32:53,721 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-08-14 02:32:53,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465595268] provided 0 perfect and 2 imperfect interpolant sequences [2024-08-14 02:32:53,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-08-14 02:32:53,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-08-14 02:32:53,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396595051] [2024-08-14 02:32:53,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-08-14 02:32:53,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 02:32:53,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 02:32:53,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 02:32:53,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-08-14 02:32:53,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 02:32:53,724 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 02:32:53,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 02:32:53,724 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:53,724 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 02:32:53,724 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.