./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-lit/sssc12-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2cc22fce 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/GemCutterReach.xml -i ../../../trunk/examples/svcomp/pthread-lit/sssc12-pthread.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 94001a9ab0492f7774a7e81f183179cf0060947b701e48f51b2989eec22ae051 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-2cc22fc-m [2024-07-22 10:15:54,215 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-07-22 10:15:54,278 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-07-22 10:15:54,281 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-07-22 10:15:54,282 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-07-22 10:15:54,305 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-07-22 10:15:54,306 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-07-22 10:15:54,306 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-07-22 10:15:54,307 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-07-22 10:15:54,310 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-07-22 10:15:54,310 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-07-22 10:15:54,311 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-07-22 10:15:54,311 INFO L153 SettingsManager]: * Use SBE=true [2024-07-22 10:15:54,312 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-07-22 10:15:54,313 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-07-22 10:15:54,313 INFO L153 SettingsManager]: * sizeof long=4 [2024-07-22 10:15:54,313 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-07-22 10:15:54,313 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-07-22 10:15:54,313 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-07-22 10:15:54,314 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-07-22 10:15:54,314 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-07-22 10:15:54,314 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-07-22 10:15:54,315 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-07-22 10:15:54,315 INFO L153 SettingsManager]: * sizeof long double=12 [2024-07-22 10:15:54,316 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-07-22 10:15:54,316 INFO L153 SettingsManager]: * Use constant arrays=true [2024-07-22 10:15:54,317 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-07-22 10:15:54,317 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-07-22 10:15:54,317 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-07-22 10:15:54,317 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-07-22 10:15:54,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-07-22 10:15:54,318 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-07-22 10:15:54,318 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-07-22 10:15:54,319 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-07-22 10:15:54,319 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-07-22 10:15:54,319 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-07-22 10:15:54,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-07-22 10:15:54,319 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-07-22 10:15:54,319 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-07-22 10:15:54,320 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-07-22 10:15:54,320 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-07-22 10:15:54,320 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-07-22 10:15:54,320 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94001a9ab0492f7774a7e81f183179cf0060947b701e48f51b2989eec22ae051 [2024-07-22 10:15:54,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-07-22 10:15:54,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-07-22 10:15:54,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-07-22 10:15:54,553 INFO L270 PluginConnector]: Initializing CDTParser... [2024-07-22 10:15:54,553 INFO L274 PluginConnector]: CDTParser initialized [2024-07-22 10:15:54,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread-lit/sssc12-pthread.i [2024-07-22 10:15:55,515 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-07-22 10:15:55,780 INFO L384 CDTParser]: Found 1 translation units. [2024-07-22 10:15:55,781 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/sssc12-pthread.i [2024-07-22 10:15:55,807 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/b7b6cf1dd/eeeb31f53725412f88f2e834e48a75af/FLAGe182594df [2024-07-22 10:15:55,819 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/b7b6cf1dd/eeeb31f53725412f88f2e834e48a75af [2024-07-22 10:15:55,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-07-22 10:15:55,822 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-07-22 10:15:55,823 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-07-22 10:15:55,824 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-07-22 10:15:55,831 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-07-22 10:15:55,836 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:15:55" (1/1) ... [2024-07-22 10:15:55,837 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb5fadb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:55, skipping insertion in model container [2024-07-22 10:15:55,837 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:15:55" (1/1) ... [2024-07-22 10:15:55,878 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-07-22 10:15:56,247 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/sssc12-pthread.i[47777,47790] [2024-07-22 10:15:56,273 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-07-22 10:15:56,292 INFO L202 MainTranslator]: Completed pre-run [2024-07-22 10:15:56,328 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/sssc12-pthread.i[47777,47790] [2024-07-22 10:15:56,341 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-07-22 10:15:56,399 INFO L206 MainTranslator]: Completed translation [2024-07-22 10:15:56,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:56 WrapperNode [2024-07-22 10:15:56,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-07-22 10:15:56,401 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-07-22 10:15:56,401 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-07-22 10:15:56,401 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-07-22 10:15:56,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:56" (1/1) ... [2024-07-22 10:15:56,431 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:56" (1/1) ... [2024-07-22 10:15:56,455 INFO L138 Inliner]: procedures = 272, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2024-07-22 10:15:56,456 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-07-22 10:15:56,457 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-07-22 10:15:56,457 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-07-22 10:15:56,457 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-07-22 10:15:56,464 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:56" (1/1) ... [2024-07-22 10:15:56,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:56" (1/1) ... [2024-07-22 10:15:56,477 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:56" (1/1) ... [2024-07-22 10:15:56,478 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:56" (1/1) ... [2024-07-22 10:15:56,482 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:56" (1/1) ... [2024-07-22 10:15:56,491 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:56" (1/1) ... [2024-07-22 10:15:56,492 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:56" (1/1) ... [2024-07-22 10:15:56,497 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:56" (1/1) ... [2024-07-22 10:15:56,498 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-07-22 10:15:56,502 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-07-22 10:15:56,502 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-07-22 10:15:56,503 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-07-22 10:15:56,503 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:56" (1/1) ... [2024-07-22 10:15:56,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-07-22 10:15:56,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:15:56,553 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) [2024-07-22 10:15:56,569 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 [2024-07-22 10:15:56,593 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2024-07-22 10:15:56,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2024-07-22 10:15:56,593 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-07-22 10:15:56,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-07-22 10:15:56,594 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-07-22 10:15:56,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-07-22 10:15:56,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-07-22 10:15:56,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-07-22 10:15:56,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-07-22 10:15:56,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-07-22 10:15:56,597 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-07-22 10:15:56,712 INFO L244 CfgBuilder]: Building ICFG [2024-07-22 10:15:56,714 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-07-22 10:15:56,829 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-07-22 10:15:56,829 INFO L293 CfgBuilder]: Performing block encoding [2024-07-22 10:15:56,945 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-07-22 10:15:56,945 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-07-22 10:15:56,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:15:56 BoogieIcfgContainer [2024-07-22 10:15:56,952 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-07-22 10:15:56,954 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-07-22 10:15:56,954 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-07-22 10:15:56,956 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-07-22 10:15:56,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:15:55" (1/3) ... [2024-07-22 10:15:56,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd011de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:15:56, skipping insertion in model container [2024-07-22 10:15:56,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:56" (2/3) ... [2024-07-22 10:15:56,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd011de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:15:56, skipping insertion in model container [2024-07-22 10:15:56,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:15:56" (3/3) ... [2024-07-22 10:15:56,959 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12-pthread.i [2024-07-22 10:15:56,966 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-07-22 10:15:56,973 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-07-22 10:15:56,973 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-07-22 10:15:56,974 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-07-22 10:15:57,005 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-07-22 10:15:57,036 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-22 10:15:57,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-22 10:15:57,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:15:57,062 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) [2024-07-22 10:15:57,063 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 [2024-07-22 10:15:57,088 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-22 10:15:57,098 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-22 10:15:57,106 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=true, 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;@23c1ab81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-22 10:15:57,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-07-22 10:15:57,204 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-22 10:15:57,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:15:57,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1616345057, now seen corresponding path program 1 times [2024-07-22 10:15:57,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:15:57,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116946031] [2024-07-22 10:15:57,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:15:57,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:15:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:15:57,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:15:57,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:15:57,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116946031] [2024-07-22 10:15:57,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116946031] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-22 10:15:57,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-22 10:15:57,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-07-22 10:15:57,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920379617] [2024-07-22 10:15:57,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-22 10:15:57,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-07-22 10:15:57,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:15:57,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-07-22 10:15:57,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-07-22 10:15:57,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:15:57,816 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:15:57,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-07-22 10:15:57,817 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:15:57,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-07-22 10:15:57,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-07-22 10:15:57,888 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-22 10:15:57,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:15:57,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1616376770, now seen corresponding path program 1 times [2024-07-22 10:15:57,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:15:57,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348025280] [2024-07-22 10:15:57,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:15:57,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:15:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-22 10:15:57,926 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-22 10:15:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-22 10:15:57,964 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-22 10:15:57,964 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-22 10:15:57,966 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-07-22 10:15:57,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-07-22 10:15:57,975 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-07-22 10:15:57,977 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (1/2) [2024-07-22 10:15:57,977 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-22 10:15:57,977 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-07-22 10:15:57,995 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-07-22 10:15:58,000 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-22 10:15:58,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-22 10:15:58,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:15:58,038 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) [2024-07-22 10:15:58,042 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-22 10:15:58,043 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread2of2ForFork0 ======== [2024-07-22 10:15:58,043 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=true, 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;@23c1ab81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-22 10:15:58,043 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-07-22 10:15:58,058 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 [2024-07-22 10:15:58,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 10:15:58,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:15:58,163 INFO L85 PathProgramCache]: Analyzing trace with hash 187401542, now seen corresponding path program 1 times [2024-07-22 10:15:58,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:15:58,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693108960] [2024-07-22 10:15:58,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:15:58,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:15:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:15:58,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:15:58,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:15:58,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693108960] [2024-07-22 10:15:58,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693108960] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-22 10:15:58,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-22 10:15:58,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-07-22 10:15:58,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472198593] [2024-07-22 10:15:58,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-22 10:15:58,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-07-22 10:15:58,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:15:58,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-07-22 10:15:58,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-07-22 10:15:58,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:15:58,418 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:15:58,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 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) [2024-07-22 10:15:58,418 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:15:58,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:15:58,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-07-22 10:15:58,528 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 10:15:58,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:15:58,528 INFO L85 PathProgramCache]: Analyzing trace with hash -2013320963, now seen corresponding path program 1 times [2024-07-22 10:15:58,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:15:58,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006133264] [2024-07-22 10:15:58,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:15:58,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:15:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:15:58,750 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:15:58,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:15:58,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006133264] [2024-07-22 10:15:58,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006133264] provided 0 perfect and 1 imperfect interpolant sequences [2024-07-22 10:15:58,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363485725] [2024-07-22 10:15:58,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:15:58,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:15:58,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:15:58,767 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-07-22 10:15:58,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-07-22 10:15:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:15:58,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 17 conjunts are in the unsatisfiable core [2024-07-22 10:15:58,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-22 10:15:59,718 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:15:59,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-07-22 10:16:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:00,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363485725] provided 0 perfect and 2 imperfect interpolant sequences [2024-07-22 10:16:00,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-07-22 10:16:00,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 10] total 24 [2024-07-22 10:16:00,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751371030] [2024-07-22 10:16:00,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-07-22 10:16:00,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-07-22 10:16:00,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:00,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-07-22 10:16:00,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2024-07-22 10:16:00,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:00,140 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:00,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.125) internal successors, (75), 24 states have internal predecessors, (75), 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) [2024-07-22 10:16:00,141 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:00,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:01,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:01,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-07-22 10:16:01,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-07-22 10:16:01,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:01,480 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 10:16:01,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:01,480 INFO L85 PathProgramCache]: Analyzing trace with hash -359268172, now seen corresponding path program 1 times [2024-07-22 10:16:01,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:01,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368213685] [2024-07-22 10:16:01,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:01,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:01,778 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-07-22 10:16:01,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:01,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368213685] [2024-07-22 10:16:01,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368213685] provided 0 perfect and 1 imperfect interpolant sequences [2024-07-22 10:16:01,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56576410] [2024-07-22 10:16:01,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:01,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:01,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:16:01,781 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) [2024-07-22 10:16:01,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-07-22 10:16:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:01,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 17 conjunts are in the unsatisfiable core [2024-07-22 10:16:01,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-22 10:16:02,066 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-07-22 10:16:02,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-07-22 10:16:02,274 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-07-22 10:16:02,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56576410] provided 0 perfect and 2 imperfect interpolant sequences [2024-07-22 10:16:02,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-07-22 10:16:02,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 22 [2024-07-22 10:16:02,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320060715] [2024-07-22 10:16:02,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-07-22 10:16:02,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-07-22 10:16:02,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:02,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-07-22 10:16:02,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-07-22 10:16:02,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:02,277 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:02,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.2272727272727275) internal successors, (93), 22 states have internal predecessors, (93), 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) [2024-07-22 10:16:02,277 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:02,277 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2024-07-22 10:16:02,277 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:03,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:03,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-07-22 10:16:03,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-07-22 10:16:03,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-07-22 10:16:03,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:03,599 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 10:16:03,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:03,599 INFO L85 PathProgramCache]: Analyzing trace with hash -649820243, now seen corresponding path program 2 times [2024-07-22 10:16:03,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:03,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910789616] [2024-07-22 10:16:03,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:03,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:03,834 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-07-22 10:16:03,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:03,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910789616] [2024-07-22 10:16:03,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910789616] provided 0 perfect and 1 imperfect interpolant sequences [2024-07-22 10:16:03,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215198941] [2024-07-22 10:16:03,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-07-22 10:16:03,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:03,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:16:03,837 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) [2024-07-22 10:16:03,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-07-22 10:16:03,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-07-22 10:16:03,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-07-22 10:16:03,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 21 conjunts are in the unsatisfiable core [2024-07-22 10:16:03,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-22 10:16:04,281 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 13 proven. 64 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-07-22 10:16:04,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-07-22 10:16:04,688 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 13 proven. 64 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-07-22 10:16:04,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215198941] provided 0 perfect and 2 imperfect interpolant sequences [2024-07-22 10:16:04,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-07-22 10:16:04,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 31 [2024-07-22 10:16:04,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565807562] [2024-07-22 10:16:04,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-07-22 10:16:04,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-07-22 10:16:04,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:04,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-07-22 10:16:04,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2024-07-22 10:16:04,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:04,691 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:04,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.161290322580645) internal successors, (129), 31 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) [2024-07-22 10:16:04,691 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:04,691 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2024-07-22 10:16:04,691 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2024-07-22 10:16:04,691 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:06,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:06,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-07-22 10:16:06,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-07-22 10:16:06,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-07-22 10:16:06,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-07-22 10:16:06,643 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,SelfDestructingSolverStorable5 [2024-07-22 10:16:06,643 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 10:16:06,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:06,644 INFO L85 PathProgramCache]: Analyzing trace with hash 983847020, now seen corresponding path program 3 times [2024-07-22 10:16:06,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:06,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884817928] [2024-07-22 10:16:06,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:06,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:07,033 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 105 proven. 42 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-07-22 10:16:07,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:07,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884817928] [2024-07-22 10:16:07,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884817928] provided 0 perfect and 1 imperfect interpolant sequences [2024-07-22 10:16:07,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402411086] [2024-07-22 10:16:07,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-07-22 10:16:07,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:07,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:16:07,035 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-07-22 10:16:07,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-07-22 10:16:07,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-07-22 10:16:07,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-07-22 10:16:07,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 29 conjunts are in the unsatisfiable core [2024-07-22 10:16:07,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-22 10:16:08,163 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 122 proven. 25 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-07-22 10:16:08,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-07-22 10:16:08,793 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 127 proven. 31 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-07-22 10:16:08,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402411086] provided 0 perfect and 2 imperfect interpolant sequences [2024-07-22 10:16:08,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-07-22 10:16:08,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 15] total 36 [2024-07-22 10:16:08,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336317853] [2024-07-22 10:16:08,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-07-22 10:16:08,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-07-22 10:16:08,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:08,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-07-22 10:16:08,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1020, Unknown=0, NotChecked=0, Total=1260 [2024-07-22 10:16:08,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:08,796 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:08,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.638888888888889) internal successors, (131), 36 states have internal predecessors, (131), 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) [2024-07-22 10:16:08,797 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:08,797 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2024-07-22 10:16:08,797 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2024-07-22 10:16:08,797 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2024-07-22 10:16:08,797 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:14,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:14,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-07-22 10:16:14,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-07-22 10:16:14,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2024-07-22 10:16:14,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-07-22 10:16:14,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-07-22 10:16:14,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:14,330 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 10:16:14,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:14,331 INFO L85 PathProgramCache]: Analyzing trace with hash -45079513, now seen corresponding path program 1 times [2024-07-22 10:16:14,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:14,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112919591] [2024-07-22 10:16:14,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:14,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:14,962 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 265 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:14,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:14,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112919591] [2024-07-22 10:16:14,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112919591] provided 0 perfect and 1 imperfect interpolant sequences [2024-07-22 10:16:14,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882863871] [2024-07-22 10:16:14,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:14,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:14,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:16:14,977 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-07-22 10:16:15,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-07-22 10:16:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:15,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 19 conjunts are in the unsatisfiable core [2024-07-22 10:16:15,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-22 10:16:15,295 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 261 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-07-22 10:16:15,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-07-22 10:16:15,398 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 313 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-07-22 10:16:15,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882863871] provided 1 perfect and 1 imperfect interpolant sequences [2024-07-22 10:16:15,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-07-22 10:16:15,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [23, 14] total 30 [2024-07-22 10:16:15,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389585193] [2024-07-22 10:16:15,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-22 10:16:15,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-07-22 10:16:15,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:15,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-07-22 10:16:15,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=583, Unknown=0, NotChecked=0, Total=870 [2024-07-22 10:16:15,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:15,402 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:15,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 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) [2024-07-22 10:16:15,402 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:15,403 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2024-07-22 10:16:15,403 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 60 states. [2024-07-22 10:16:15,403 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 162 states. [2024-07-22 10:16:15,403 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 38 states. [2024-07-22 10:16:15,403 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:28,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:28,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-07-22 10:16:28,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2024-07-22 10:16:28,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 308 states. [2024-07-22 10:16:28,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-07-22 10:16:28,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-07-22 10:16:28,669 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-07-22 10:16:28,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-07-22 10:16:28,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-07-22 10:16:28,871 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2024-07-22 10:16:28,871 INFO L308 ceAbstractionStarter]: Result for error location thrThread2of2ForFork0 was SAFE (1/3) [2024-07-22 10:16:28,873 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-22 10:16:28,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-22 10:16:28,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:16:28,884 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-22 10:16:28,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (9)] Waiting until timeout for monitored process [2024-07-22 10:16:28,907 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-22 10:16:28,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread1of2ForFork0 ======== [2024-07-22 10:16:28,908 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=true, 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;@23c1ab81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-22 10:16:28,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-07-22 10:16:28,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 10:16:28,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:28,969 INFO L85 PathProgramCache]: Analyzing trace with hash 287813713, now seen corresponding path program 1 times [2024-07-22 10:16:28,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:28,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156951098] [2024-07-22 10:16:28,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:28,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:29,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:29,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:29,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156951098] [2024-07-22 10:16:29,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156951098] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-22 10:16:29,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-22 10:16:29,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-07-22 10:16:29,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046966703] [2024-07-22 10:16:29,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-22 10:16:29,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-07-22 10:16:29,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:29,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-07-22 10:16:29,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-07-22 10:16:29,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:29,032 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:29,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 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) [2024-07-22 10:16:29,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:29,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:29,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-07-22 10:16:29,087 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 10:16:29,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:29,088 INFO L85 PathProgramCache]: Analyzing trace with hash 152175889, now seen corresponding path program 1 times [2024-07-22 10:16:29,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:29,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022443774] [2024-07-22 10:16:29,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:29,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:29,180 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:29,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:29,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022443774] [2024-07-22 10:16:29,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022443774] provided 0 perfect and 1 imperfect interpolant sequences [2024-07-22 10:16:29,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312502824] [2024-07-22 10:16:29,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:29,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:29,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:16:29,216 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-07-22 10:16:29,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-07-22 10:16:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:29,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 16 conjunts are in the unsatisfiable core [2024-07-22 10:16:29,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-22 10:16:29,504 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:29,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-07-22 10:16:29,620 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:29,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312502824] provided 0 perfect and 2 imperfect interpolant sequences [2024-07-22 10:16:29,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-07-22 10:16:29,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2024-07-22 10:16:29,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181083573] [2024-07-22 10:16:29,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-07-22 10:16:29,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-07-22 10:16:29,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:29,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-07-22 10:16:29,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-07-22 10:16:29,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:29,624 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:29,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 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) [2024-07-22 10:16:29,625 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:29,625 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:29,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:29,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-07-22 10:16:29,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-07-22 10:16:30,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-07-22 10:16:30,067 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 10:16:30,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:30,068 INFO L85 PathProgramCache]: Analyzing trace with hash -746178730, now seen corresponding path program 1 times [2024-07-22 10:16:30,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:30,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792663075] [2024-07-22 10:16:30,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:30,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:30,244 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:30,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:30,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792663075] [2024-07-22 10:16:30,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792663075] provided 0 perfect and 1 imperfect interpolant sequences [2024-07-22 10:16:30,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005733361] [2024-07-22 10:16:30,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:30,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:30,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:16:30,246 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) [2024-07-22 10:16:30,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-07-22 10:16:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:30,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 16 conjunts are in the unsatisfiable core [2024-07-22 10:16:30,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-22 10:16:30,595 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:30,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-07-22 10:16:30,861 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:30,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005733361] provided 0 perfect and 2 imperfect interpolant sequences [2024-07-22 10:16:30,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-07-22 10:16:30,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 27 [2024-07-22 10:16:30,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736200435] [2024-07-22 10:16:30,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-07-22 10:16:30,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-07-22 10:16:30,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:30,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-07-22 10:16:30,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2024-07-22 10:16:30,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:30,866 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:30,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.888888888888889) internal successors, (105), 27 states have internal predecessors, (105), 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) [2024-07-22 10:16:30,866 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:30,866 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-07-22 10:16:30,866 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:31,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:31,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-07-22 10:16:31,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-07-22 10:16:31,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-07-22 10:16:31,683 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,SelfDestructingSolverStorable10 [2024-07-22 10:16:31,683 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 10:16:31,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:31,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1812265462, now seen corresponding path program 2 times [2024-07-22 10:16:31,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:31,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780657187] [2024-07-22 10:16:31,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:31,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:31,978 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 129 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:31,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:31,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780657187] [2024-07-22 10:16:31,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780657187] provided 0 perfect and 1 imperfect interpolant sequences [2024-07-22 10:16:31,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506549916] [2024-07-22 10:16:31,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-07-22 10:16:31,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:31,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:16:31,980 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-07-22 10:16:32,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-07-22 10:16:32,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-07-22 10:16:32,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-07-22 10:16:32,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 18 conjunts are in the unsatisfiable core [2024-07-22 10:16:32,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-22 10:16:32,497 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 108 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:32,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-07-22 10:16:32,943 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 144 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:32,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506549916] provided 0 perfect and 2 imperfect interpolant sequences [2024-07-22 10:16:32,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-07-22 10:16:32,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 41 [2024-07-22 10:16:32,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119744923] [2024-07-22 10:16:32,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-07-22 10:16:32,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-07-22 10:16:32,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:32,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-07-22 10:16:32,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=1202, Unknown=0, NotChecked=0, Total=1640 [2024-07-22 10:16:32,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:32,946 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:32,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.8048780487804876) internal successors, (156), 41 states have internal predecessors, (156), 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) [2024-07-22 10:16:32,946 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:32,946 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-07-22 10:16:32,946 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2024-07-22 10:16:32,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:34,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:34,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-07-22 10:16:34,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-07-22 10:16:34,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-07-22 10:16:34,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-07-22 10:16:34,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:34,512 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 10:16:34,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:34,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1823994826, now seen corresponding path program 1 times [2024-07-22 10:16:34,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:34,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715924600] [2024-07-22 10:16:34,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:34,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:34,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:34,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:34,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715924600] [2024-07-22 10:16:34,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715924600] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-22 10:16:34,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-22 10:16:34,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-22 10:16:34,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323366867] [2024-07-22 10:16:34,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-22 10:16:34,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-22 10:16:34,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:34,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-22 10:16:34,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-22 10:16:34,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:34,574 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:34,574 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) [2024-07-22 10:16:34,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:34,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2024-07-22 10:16:34,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2024-07-22 10:16:34,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2024-07-22 10:16:34,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:34,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:34,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-07-22 10:16:34,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-07-22 10:16:34,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-07-22 10:16:34,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-22 10:16:34,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-07-22 10:16:34,641 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 10:16:34,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:34,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1567442154, now seen corresponding path program 2 times [2024-07-22 10:16:34,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:34,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653435183] [2024-07-22 10:16:34,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:34,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:34,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:34,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:34,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653435183] [2024-07-22 10:16:34,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653435183] provided 0 perfect and 1 imperfect interpolant sequences [2024-07-22 10:16:34,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352728582] [2024-07-22 10:16:34,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-07-22 10:16:34,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:34,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:16:34,785 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) [2024-07-22 10:16:34,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-07-22 10:16:34,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-07-22 10:16:34,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-07-22 10:16:34,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2024-07-22 10:16:34,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-22 10:16:35,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:35,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-07-22 10:16:35,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:35,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352728582] provided 0 perfect and 2 imperfect interpolant sequences [2024-07-22 10:16:35,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-07-22 10:16:35,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-07-22 10:16:35,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768808368] [2024-07-22 10:16:35,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-07-22 10:16:35,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-07-22 10:16:35,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:35,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-07-22 10:16:35,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-07-22 10:16:35,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:35,168 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:35,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 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) [2024-07-22 10:16:35,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:35,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2024-07-22 10:16:35,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2024-07-22 10:16:35,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2024-07-22 10:16:35,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-22 10:16:35,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:35,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:35,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-07-22 10:16:35,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-07-22 10:16:35,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-07-22 10:16:35,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-22 10:16:35,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-07-22 10:16:35,883 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-07-22 10:16:35,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-07-22 10:16:36,094 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,SelfDestructingSolverStorable13 [2024-07-22 10:16:36,096 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-07-22 10:16:36,096 INFO L308 ceAbstractionStarter]: Result for error location thrThread1of2ForFork0 was SAFE (2/3) [2024-07-22 10:16:36,099 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-22 10:16:36,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-22 10:16:36,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:16:36,100 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) [2024-07-22 10:16:36,103 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-22 10:16:36,103 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-22 10:16:36,103 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=true, 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;@23c1ab81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-22 10:16:36,103 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-07-22 10:16:36,115 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 [2024-07-22 10:16:36,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-22 10:16:36,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:36,170 INFO L85 PathProgramCache]: Analyzing trace with hash -295737650, now seen corresponding path program 1 times [2024-07-22 10:16:36,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:36,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738947402] [2024-07-22 10:16:36,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:36,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:36,246 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-07-22 10:16:36,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:36,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738947402] [2024-07-22 10:16:36,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738947402] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-22 10:16:36,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-22 10:16:36,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-07-22 10:16:36,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831821708] [2024-07-22 10:16:36,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-22 10:16:36,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-07-22 10:16:36,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:36,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-07-22 10:16:36,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-07-22 10:16:36,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:36,249 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:36,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-07-22 10:16:36,249 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:36,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:36,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-07-22 10:16:36,300 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-22 10:16:36,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:36,301 INFO L85 PathProgramCache]: Analyzing trace with hash -2066155323, now seen corresponding path program 1 times [2024-07-22 10:16:36,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:36,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277081820] [2024-07-22 10:16:36,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:36,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:36,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:36,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:36,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277081820] [2024-07-22 10:16:36,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277081820] provided 0 perfect and 1 imperfect interpolant sequences [2024-07-22 10:16:36,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370367436] [2024-07-22 10:16:36,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:36,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:36,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:16:36,422 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) [2024-07-22 10:16:36,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-07-22 10:16:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:36,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 17 conjunts are in the unsatisfiable core [2024-07-22 10:16:36,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-22 10:16:36,816 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:36,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-07-22 10:16:37,004 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:37,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370367436] provided 0 perfect and 2 imperfect interpolant sequences [2024-07-22 10:16:37,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-07-22 10:16:37,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 20 [2024-07-22 10:16:37,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793641105] [2024-07-22 10:16:37,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-07-22 10:16:37,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-07-22 10:16:37,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:37,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-07-22 10:16:37,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2024-07-22 10:16:37,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:37,006 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:37,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.9) internal successors, (78), 20 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) [2024-07-22 10:16:37,011 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:37,012 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:37,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:37,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-07-22 10:16:37,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-07-22 10:16:37,775 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,SelfDestructingSolverStorable15 [2024-07-22 10:16:37,776 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-22 10:16:37,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:37,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1121361627, now seen corresponding path program 1 times [2024-07-22 10:16:37,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:37,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966012340] [2024-07-22 10:16:37,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:37,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-22 10:16:37,790 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-22 10:16:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-22 10:16:37,809 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-22 10:16:37,810 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-22 10:16:37,810 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-07-22 10:16:37,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-07-22 10:16:37,812 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-07-22 10:16:37,813 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (3/3) [2024-07-22 10:16:37,813 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-22 10:16:37,813 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-07-22 10:16:37,824 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-07-22 10:16:37,826 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-22 10:16:37,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-22 10:16:37,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:16:37,827 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) [2024-07-22 10:16:37,832 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 [2024-07-22 10:16:37,833 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-22 10:16:37,834 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread1of3ForFork0 ======== [2024-07-22 10:16:37,834 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=true, 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;@23c1ab81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-22 10:16:37,834 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-07-22 10:16:37,904 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 10:16:37,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:37,905 INFO L85 PathProgramCache]: Analyzing trace with hash -990054099, now seen corresponding path program 1 times [2024-07-22 10:16:37,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:37,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069611873] [2024-07-22 10:16:37,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:37,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:37,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:37,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:37,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069611873] [2024-07-22 10:16:37,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069611873] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-22 10:16:37,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-22 10:16:37,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-07-22 10:16:37,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633252084] [2024-07-22 10:16:37,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-22 10:16:37,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-07-22 10:16:37,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:37,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-07-22 10:16:37,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-07-22 10:16:37,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:37,979 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:37,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 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) [2024-07-22 10:16:37,980 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:38,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:38,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-07-22 10:16:38,050 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 10:16:38,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:38,050 INFO L85 PathProgramCache]: Analyzing trace with hash 665500769, now seen corresponding path program 1 times [2024-07-22 10:16:38,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:38,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836766190] [2024-07-22 10:16:38,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:38,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:38,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:38,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836766190] [2024-07-22 10:16:38,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836766190] provided 0 perfect and 1 imperfect interpolant sequences [2024-07-22 10:16:38,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455156082] [2024-07-22 10:16:38,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:38,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:38,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:16:38,166 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) [2024-07-22 10:16:38,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-07-22 10:16:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:38,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjunts are in the unsatisfiable core [2024-07-22 10:16:38,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-22 10:16:38,484 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:38,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-07-22 10:16:38,608 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:38,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455156082] provided 0 perfect and 2 imperfect interpolant sequences [2024-07-22 10:16:38,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-07-22 10:16:38,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2024-07-22 10:16:38,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247482672] [2024-07-22 10:16:38,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-07-22 10:16:38,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-07-22 10:16:38,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:38,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-07-22 10:16:38,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-07-22 10:16:38,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:38,617 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:38,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 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) [2024-07-22 10:16:38,617 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:38,617 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:38,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:38,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-07-22 10:16:38,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-07-22 10:16:39,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:39,120 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 10:16:39,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:39,120 INFO L85 PathProgramCache]: Analyzing trace with hash 815203750, now seen corresponding path program 1 times [2024-07-22 10:16:39,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:39,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490953797] [2024-07-22 10:16:39,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:39,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:39,343 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:39,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:39,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490953797] [2024-07-22 10:16:39,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490953797] provided 0 perfect and 1 imperfect interpolant sequences [2024-07-22 10:16:39,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924854111] [2024-07-22 10:16:39,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:39,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:39,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:16:39,345 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-07-22 10:16:39,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-07-22 10:16:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:39,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 16 conjunts are in the unsatisfiable core [2024-07-22 10:16:39,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-22 10:16:39,754 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:39,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-07-22 10:16:40,040 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:40,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924854111] provided 0 perfect and 2 imperfect interpolant sequences [2024-07-22 10:16:40,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-07-22 10:16:40,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 27 [2024-07-22 10:16:40,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973876628] [2024-07-22 10:16:40,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-07-22 10:16:40,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-07-22 10:16:40,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:40,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-07-22 10:16:40,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2024-07-22 10:16:40,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:40,043 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:40,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.111111111111111) internal successors, (138), 27 states have internal predecessors, (138), 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) [2024-07-22 10:16:40,043 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:40,043 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-07-22 10:16:40,043 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:40,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:40,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-07-22 10:16:40,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-07-22 10:16:40,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-07-22 10:16:40,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:40,983 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 10:16:40,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:40,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1676085178, now seen corresponding path program 2 times [2024-07-22 10:16:40,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:40,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64471601] [2024-07-22 10:16:40,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:40,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:41,296 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 134 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:41,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:41,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64471601] [2024-07-22 10:16:41,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64471601] provided 0 perfect and 1 imperfect interpolant sequences [2024-07-22 10:16:41,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054571483] [2024-07-22 10:16:41,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-07-22 10:16:41,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:41,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:16:41,298 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-07-22 10:16:41,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-07-22 10:16:41,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-07-22 10:16:41,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-07-22 10:16:41,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 18 conjunts are in the unsatisfiable core [2024-07-22 10:16:41,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-22 10:16:41,887 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 115 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:41,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-07-22 10:16:42,374 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 152 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:42,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054571483] provided 0 perfect and 2 imperfect interpolant sequences [2024-07-22 10:16:42,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-07-22 10:16:42,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 41 [2024-07-22 10:16:42,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259541220] [2024-07-22 10:16:42,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-07-22 10:16:42,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-07-22 10:16:42,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:42,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-07-22 10:16:42,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=1202, Unknown=0, NotChecked=0, Total=1640 [2024-07-22 10:16:42,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:42,376 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:42,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.609756097560975) internal successors, (189), 41 states have internal predecessors, (189), 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) [2024-07-22 10:16:42,377 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:42,377 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-07-22 10:16:42,377 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2024-07-22 10:16:42,377 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:45,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:45,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-07-22 10:16:45,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-07-22 10:16:45,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-07-22 10:16:45,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-07-22 10:16:45,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-07-22 10:16:45,731 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 10:16:45,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:45,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1652129946, now seen corresponding path program 1 times [2024-07-22 10:16:45,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:45,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216372777] [2024-07-22 10:16:45,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:45,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:45,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:45,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:45,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216372777] [2024-07-22 10:16:45,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216372777] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-22 10:16:45,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-22 10:16:45,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-07-22 10:16:45,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479355206] [2024-07-22 10:16:45,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-22 10:16:45,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-22 10:16:45,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:45,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-22 10:16:45,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-22 10:16:45,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:45,758 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:45,758 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) [2024-07-22 10:16:45,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:45,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2024-07-22 10:16:45,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2024-07-22 10:16:45,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2024-07-22 10:16:45,758 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:46,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:46,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-07-22 10:16:46,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-07-22 10:16:46,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-07-22 10:16:46,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-22 10:16:46,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-07-22 10:16:46,464 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 10:16:46,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:46,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1304036994, now seen corresponding path program 2 times [2024-07-22 10:16:46,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:46,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617475056] [2024-07-22 10:16:46,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:46,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:46,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:46,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:46,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617475056] [2024-07-22 10:16:46,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617475056] provided 0 perfect and 1 imperfect interpolant sequences [2024-07-22 10:16:46,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849847148] [2024-07-22 10:16:46,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-07-22 10:16:46,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:46,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:16:46,619 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-07-22 10:16:46,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-07-22 10:16:46,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-07-22 10:16:46,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-07-22 10:16:46,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2024-07-22 10:16:46,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-22 10:16:46,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:46,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-07-22 10:16:46,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:46,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849847148] provided 0 perfect and 2 imperfect interpolant sequences [2024-07-22 10:16:46,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-07-22 10:16:46,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-07-22 10:16:46,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776151940] [2024-07-22 10:16:46,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-07-22 10:16:47,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-07-22 10:16:47,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:47,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-07-22 10:16:47,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-07-22 10:16:47,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:47,004 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:47,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 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) [2024-07-22 10:16:47,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:47,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2024-07-22 10:16:47,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2024-07-22 10:16:47,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2024-07-22 10:16:47,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-22 10:16:47,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:48,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:48,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-07-22 10:16:48,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-07-22 10:16:48,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-07-22 10:16:48,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-22 10:16:48,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-07-22 10:16:48,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-07-22 10:16:48,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-07-22 10:16:49,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:49,165 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-07-22 10:16:49,165 INFO L308 ceAbstractionStarter]: Result for error location thrThread1of3ForFork0 was SAFE (1/4) [2024-07-22 10:16:49,166 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-22 10:16:49,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-22 10:16:49,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:16:49,171 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-22 10:16:49,176 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-22 10:16:49,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-22 10:16:49,176 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=true, 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;@23c1ab81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-22 10:16:49,177 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-07-22 10:16:49,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (21)] Waiting until timeout for monitored process [2024-07-22 10:16:49,232 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-22 10:16:49,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:49,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1125992920, now seen corresponding path program 1 times [2024-07-22 10:16:49,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:49,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879279529] [2024-07-22 10:16:49,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:49,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-07-22 10:16:49,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:49,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879279529] [2024-07-22 10:16:49,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879279529] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-22 10:16:49,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-22 10:16:49,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-07-22 10:16:49,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731312519] [2024-07-22 10:16:49,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-22 10:16:49,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-07-22 10:16:49,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:49,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-07-22 10:16:49,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-07-22 10:16:49,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:49,368 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:49,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-07-22 10:16:49,368 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:49,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:49,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-07-22 10:16:49,444 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-22 10:16:49,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:49,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1573238865, now seen corresponding path program 1 times [2024-07-22 10:16:49,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:49,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891396355] [2024-07-22 10:16:49,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:49,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:49,581 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-07-22 10:16:49,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:49,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891396355] [2024-07-22 10:16:49,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891396355] provided 0 perfect and 1 imperfect interpolant sequences [2024-07-22 10:16:49,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802864368] [2024-07-22 10:16:49,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:49,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:49,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:16:49,584 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-07-22 10:16:49,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-07-22 10:16:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:49,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 17 conjunts are in the unsatisfiable core [2024-07-22 10:16:49,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-22 10:16:49,927 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-07-22 10:16:49,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-07-22 10:16:50,037 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-07-22 10:16:50,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802864368] provided 0 perfect and 2 imperfect interpolant sequences [2024-07-22 10:16:50,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-07-22 10:16:50,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 19 [2024-07-22 10:16:50,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605826419] [2024-07-22 10:16:50,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-07-22 10:16:50,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-07-22 10:16:50,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:50,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-07-22 10:16:50,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-07-22 10:16:50,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:50,039 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:50,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 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) [2024-07-22 10:16:50,040 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:50,040 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:50,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:50,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-07-22 10:16:50,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-07-22 10:16:50,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-07-22 10:16:50,502 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-22 10:16:50,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:50,502 INFO L85 PathProgramCache]: Analyzing trace with hash 202073319, now seen corresponding path program 1 times [2024-07-22 10:16:50,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:50,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350195154] [2024-07-22 10:16:50,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:50,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:50,888 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:50,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:50,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350195154] [2024-07-22 10:16:50,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350195154] provided 0 perfect and 1 imperfect interpolant sequences [2024-07-22 10:16:50,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650449979] [2024-07-22 10:16:50,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:50,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:50,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:16:50,890 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-07-22 10:16:50,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-07-22 10:16:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:50,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 17 conjunts are in the unsatisfiable core [2024-07-22 10:16:51,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-22 10:16:51,213 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-07-22 10:16:51,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-07-22 10:16:51,464 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:51,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650449979] provided 0 perfect and 2 imperfect interpolant sequences [2024-07-22 10:16:51,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-07-22 10:16:51,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 8] total 23 [2024-07-22 10:16:51,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513192805] [2024-07-22 10:16:51,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-07-22 10:16:51,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-07-22 10:16:51,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:51,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-07-22 10:16:51,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2024-07-22 10:16:51,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:51,467 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:51,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-07-22 10:16:51,467 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:51,467 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-07-22 10:16:51,467 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:52,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:52,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-07-22 10:16:52,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-07-22 10:16:52,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-07-22 10:16:52,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-07-22 10:16:52,721 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-07-22 10:16:52,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:52,721 INFO L85 PathProgramCache]: Analyzing trace with hash 633402970, now seen corresponding path program 1 times [2024-07-22 10:16:52,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:52,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642709198] [2024-07-22 10:16:52,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:52,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-22 10:16:52,747 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-22 10:16:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-22 10:16:52,781 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-22 10:16:52,782 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-22 10:16:52,782 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-07-22 10:16:52,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-07-22 10:16:52,784 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-07-22 10:16:52,785 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (2/4) [2024-07-22 10:16:52,785 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-07-22 10:16:52,786 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-07-22 10:16:52,805 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-07-22 10:16:52,809 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-22 10:16:52,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-22 10:16:52,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:16:52,824 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-22 10:16:52,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (24)] Waiting until timeout for monitored process [2024-07-22 10:16:52,836 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-22 10:16:52,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread1of4ForFork0 ======== [2024-07-22 10:16:52,837 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=true, 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;@23c1ab81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-22 10:16:52,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-07-22 10:16:52,922 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 10:16:52,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:52,922 INFO L85 PathProgramCache]: Analyzing trace with hash -899204767, now seen corresponding path program 1 times [2024-07-22 10:16:52,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:52,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020163878] [2024-07-22 10:16:52,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:52,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:52,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:52,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:52,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020163878] [2024-07-22 10:16:52,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020163878] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-22 10:16:52,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-22 10:16:52,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-07-22 10:16:52,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082796034] [2024-07-22 10:16:52,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-22 10:16:52,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-07-22 10:16:52,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:52,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-07-22 10:16:52,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-07-22 10:16:52,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:52,992 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:52,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 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) [2024-07-22 10:16:52,993 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:53,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:53,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-07-22 10:16:53,070 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 10:16:53,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:53,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1654205102, now seen corresponding path program 1 times [2024-07-22 10:16:53,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:53,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999842288] [2024-07-22 10:16:53,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:53,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:53,155 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:53,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:53,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999842288] [2024-07-22 10:16:53,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999842288] provided 0 perfect and 1 imperfect interpolant sequences [2024-07-22 10:16:53,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188959259] [2024-07-22 10:16:53,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:53,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:53,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:16:53,173 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-07-22 10:16:53,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-07-22 10:16:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:53,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjunts are in the unsatisfiable core [2024-07-22 10:16:53,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-22 10:16:53,453 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:53,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-07-22 10:16:53,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:53,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188959259] provided 0 perfect and 2 imperfect interpolant sequences [2024-07-22 10:16:53,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-07-22 10:16:53,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2024-07-22 10:16:53,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435135737] [2024-07-22 10:16:53,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-07-22 10:16:53,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-07-22 10:16:53,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:53,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-07-22 10:16:53,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-07-22 10:16:53,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:53,590 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:53,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 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) [2024-07-22 10:16:53,591 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:53,591 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:53,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:53,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-07-22 10:16:53,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-07-22 10:16:54,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,25 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:54,147 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 10:16:54,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:54,147 INFO L85 PathProgramCache]: Analyzing trace with hash -43665052, now seen corresponding path program 1 times [2024-07-22 10:16:54,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:54,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913158581] [2024-07-22 10:16:54,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:54,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:54,350 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:54,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:54,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913158581] [2024-07-22 10:16:54,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913158581] provided 0 perfect and 1 imperfect interpolant sequences [2024-07-22 10:16:54,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539346608] [2024-07-22 10:16:54,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:54,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:54,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:16:54,352 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-07-22 10:16:54,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-07-22 10:16:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:54,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 25 conjunts are in the unsatisfiable core [2024-07-22 10:16:54,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-22 10:16:55,438 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 22 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:55,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-07-22 10:16:56,011 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 36 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:56,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539346608] provided 0 perfect and 2 imperfect interpolant sequences [2024-07-22 10:16:56,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-07-22 10:16:56,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 11] total 31 [2024-07-22 10:16:56,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001042097] [2024-07-22 10:16:56,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-07-22 10:16:56,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-07-22 10:16:56,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:56,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-07-22 10:16:56,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=785, Unknown=0, NotChecked=0, Total=930 [2024-07-22 10:16:56,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:56,013 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:56,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.483870967741935) internal successors, (170), 31 states have internal predecessors, (170), 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) [2024-07-22 10:16:56,013 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:56,013 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-07-22 10:16:56,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:57,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:57,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-07-22 10:16:57,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-07-22 10:16:57,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-07-22 10:16:58,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:58,037 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 10:16:58,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:16:58,037 INFO L85 PathProgramCache]: Analyzing trace with hash -2025754410, now seen corresponding path program 1 times [2024-07-22 10:16:58,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:16:58,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12464160] [2024-07-22 10:16:58,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:58,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:16:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:58,340 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:16:58,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:16:58,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12464160] [2024-07-22 10:16:58,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12464160] provided 0 perfect and 1 imperfect interpolant sequences [2024-07-22 10:16:58,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349157327] [2024-07-22 10:16:58,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:16:58,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:16:58,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:16:58,342 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-07-22 10:16:58,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-07-22 10:16:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:16:58,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 22 conjunts are in the unsatisfiable core [2024-07-22 10:16:58,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-22 10:16:58,702 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 68 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-07-22 10:16:58,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-07-22 10:16:58,966 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 67 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-07-22 10:16:58,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349157327] provided 0 perfect and 2 imperfect interpolant sequences [2024-07-22 10:16:58,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-07-22 10:16:58,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 29 [2024-07-22 10:16:58,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502224842] [2024-07-22 10:16:58,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-07-22 10:16:58,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-07-22 10:16:58,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:16:58,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-07-22 10:16:58,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2024-07-22 10:16:58,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:16:58,968 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:16:58,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.620689655172414) internal successors, (163), 29 states have internal predecessors, (163), 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) [2024-07-22 10:16:58,969 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:16:58,969 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-07-22 10:16:58,969 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 56 states. [2024-07-22 10:16:58,969 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:17:00,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:17:00,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-07-22 10:17:00,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-07-22 10:17:00,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-07-22 10:17:00,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-07-22 10:17:01,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:17:01,014 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 10:17:01,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:17:01,015 INFO L85 PathProgramCache]: Analyzing trace with hash -252559084, now seen corresponding path program 2 times [2024-07-22 10:17:01,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:17:01,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965579367] [2024-07-22 10:17:01,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:17:01,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:17:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:17:01,364 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:17:01,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:17:01,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965579367] [2024-07-22 10:17:01,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965579367] provided 0 perfect and 1 imperfect interpolant sequences [2024-07-22 10:17:01,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298453019] [2024-07-22 10:17:01,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-07-22 10:17:01,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:17:01,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:17:01,380 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-07-22 10:17:01,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-07-22 10:17:01,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-07-22 10:17:01,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-07-22 10:17:01,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 20 conjunts are in the unsatisfiable core [2024-07-22 10:17:01,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-22 10:17:02,134 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 8 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:17:02,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-07-22 10:17:02,731 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 8 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:17:02,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298453019] provided 0 perfect and 2 imperfect interpolant sequences [2024-07-22 10:17:02,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-07-22 10:17:02,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 39 [2024-07-22 10:17:02,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051923654] [2024-07-22 10:17:02,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-07-22 10:17:02,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-07-22 10:17:02,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:17:02,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-07-22 10:17:02,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1132, Unknown=0, NotChecked=0, Total=1482 [2024-07-22 10:17:02,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:17:02,734 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:17:02,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 6.230769230769231) internal successors, (243), 39 states have internal predecessors, (243), 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) [2024-07-22 10:17:02,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:17:02,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-07-22 10:17:02,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2024-07-22 10:17:02,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 63 states. [2024-07-22 10:17:02,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:17:04,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:17:04,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-07-22 10:17:04,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-07-22 10:17:04,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-07-22 10:17:04,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-07-22 10:17:04,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-07-22 10:17:04,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:17:04,790 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 10:17:04,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 10:17:04,790 INFO L85 PathProgramCache]: Analyzing trace with hash 888698828, now seen corresponding path program 3 times [2024-07-22 10:17:04,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 10:17:04,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115458101] [2024-07-22 10:17:04,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 10:17:04,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 10:17:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 10:17:05,229 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 515 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 10:17:05,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 10:17:05,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115458101] [2024-07-22 10:17:05,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115458101] provided 0 perfect and 1 imperfect interpolant sequences [2024-07-22 10:17:05,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905485889] [2024-07-22 10:17:05,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-07-22 10:17:05,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 10:17:05,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 10:17:05,245 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-07-22 10:17:05,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-07-22 10:17:05,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-07-22 10:17:05,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-07-22 10:17:05,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 16 conjunts are in the unsatisfiable core [2024-07-22 10:17:05,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-22 10:17:05,765 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 60 proven. 18 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-07-22 10:17:05,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-07-22 10:17:05,996 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 8 proven. 70 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-07-22 10:17:05,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905485889] provided 0 perfect and 2 imperfect interpolant sequences [2024-07-22 10:17:05,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-07-22 10:17:05,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 8, 7] total 35 [2024-07-22 10:17:05,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464299483] [2024-07-22 10:17:05,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-07-22 10:17:05,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-07-22 10:17:05,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 10:17:05,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-07-22 10:17:05,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=902, Unknown=0, NotChecked=0, Total=1190 [2024-07-22 10:17:05,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 10:17:05,999 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 10:17:05,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 6.142857142857143) internal successors, (215), 35 states have internal predecessors, (215), 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) [2024-07-22 10:17:06,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 10:17:06,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-07-22 10:17:06,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2024-07-22 10:17:06,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 75 states. [2024-07-22 10:17:06,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 47 states. [2024-07-22 10:17:06,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.