./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-lit/sssc12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a4c57e3 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.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 f04269da33313e0538e960083eba1e7b90d9e89847d2a89d06392d6991a3ed98 --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-4a4c57e-m [2024-09-08 19:45:12,248 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-08 19:45:12,293 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-09-08 19:45:12,297 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-08 19:45:12,297 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-08 19:45:12,323 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-08 19:45:12,325 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-08 19:45:12,326 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-08 19:45:12,326 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-08 19:45:12,327 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-08 19:45:12,328 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-08 19:45:12,328 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-08 19:45:12,329 INFO L153 SettingsManager]: * Use SBE=true [2024-09-08 19:45:12,330 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-08 19:45:12,332 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-08 19:45:12,332 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-08 19:45:12,332 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-08 19:45:12,333 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-08 19:45:12,333 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-08 19:45:12,333 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-08 19:45:12,333 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-08 19:45:12,334 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-08 19:45:12,335 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-08 19:45:12,336 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-08 19:45:12,336 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-08 19:45:12,336 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-08 19:45:12,336 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-08 19:45:12,336 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-08 19:45:12,337 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-08 19:45:12,337 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-08 19:45:12,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-09-08 19:45:12,337 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-08 19:45:12,338 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-08 19:45:12,338 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-08 19:45:12,338 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-08 19:45:12,339 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-09-08 19:45:12,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-08 19:45:12,339 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-08 19:45:12,339 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-09-08 19:45:12,340 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-09-08 19:45:12,340 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-09-08 19:45:12,340 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f04269da33313e0538e960083eba1e7b90d9e89847d2a89d06392d6991a3ed98 [2024-09-08 19:45:12,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-08 19:45:12,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-08 19:45:12,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-08 19:45:12,603 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-08 19:45:12,603 INFO L274 PluginConnector]: CDTParser initialized [2024-09-08 19:45:12,604 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread-lit/sssc12.i [2024-09-08 19:45:14,051 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-08 19:45:14,227 INFO L384 CDTParser]: Found 1 translation units. [2024-09-08 19:45:14,227 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/sssc12.i [2024-09-08 19:45:14,241 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/75075f11c/b65ccf4b573d4198b8cb117141568820/FLAG7b24a5688 [2024-09-08 19:45:14,592 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/75075f11c/b65ccf4b573d4198b8cb117141568820 [2024-09-08 19:45:14,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-08 19:45:14,595 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-08 19:45:14,596 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-08 19:45:14,596 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-08 19:45:14,603 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-08 19:45:14,604 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 07:45:14" (1/1) ... [2024-09-08 19:45:14,605 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@666f4783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:14, skipping insertion in model container [2024-09-08 19:45:14,605 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 07:45:14" (1/1) ... [2024-09-08 19:45:14,655 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-08 19:45:15,021 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.i[46865,46878] [2024-09-08 19:45:15,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-08 19:45:15,054 INFO L200 MainTranslator]: Completed pre-run [2024-09-08 19:45:15,102 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.i[46865,46878] [2024-09-08 19:45:15,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-08 19:45:15,153 INFO L204 MainTranslator]: Completed translation [2024-09-08 19:45:15,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:15 WrapperNode [2024-09-08 19:45:15,156 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-08 19:45:15,157 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-08 19:45:15,158 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-08 19:45:15,158 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-08 19:45:15,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:15" (1/1) ... [2024-09-08 19:45:15,180 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:15" (1/1) ... [2024-09-08 19:45:15,206 INFO L138 Inliner]: procedures = 274, calls = 19, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 78 [2024-09-08 19:45:15,207 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-08 19:45:15,207 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-08 19:45:15,207 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-08 19:45:15,207 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-08 19:45:15,213 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:15" (1/1) ... [2024-09-08 19:45:15,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:15" (1/1) ... [2024-09-08 19:45:15,216 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:15" (1/1) ... [2024-09-08 19:45:15,220 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:15" (1/1) ... [2024-09-08 19:45:15,224 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:15" (1/1) ... [2024-09-08 19:45:15,229 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:15" (1/1) ... [2024-09-08 19:45:15,231 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:15" (1/1) ... [2024-09-08 19:45:15,232 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:15" (1/1) ... [2024-09-08 19:45:15,236 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-08 19:45:15,237 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-08 19:45:15,237 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-08 19:45:15,237 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-08 19:45:15,238 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:15" (1/1) ... [2024-09-08 19:45:15,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-09-08 19:45:15,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:45:15,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-09-08 19:45:15,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-09-08 19:45:15,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-09-08 19:45:15,304 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2024-09-08 19:45:15,304 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2024-09-08 19:45:15,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-09-08 19:45:15,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-09-08 19:45:15,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-09-08 19:45:15,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-08 19:45:15,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-08 19:45:15,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-08 19:45:15,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-08 19:45:15,307 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-09-08 19:45:15,427 INFO L242 CfgBuilder]: Building ICFG [2024-09-08 19:45:15,429 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-08 19:45:15,543 INFO L287 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-09-08 19:45:15,543 INFO L291 CfgBuilder]: Performing block encoding [2024-09-08 19:45:15,642 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-08 19:45:15,642 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-08 19:45:15,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 07:45:15 BoogieIcfgContainer [2024-09-08 19:45:15,643 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-08 19:45:15,645 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-08 19:45:15,645 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-08 19:45:15,647 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-08 19:45:15,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 07:45:14" (1/3) ... [2024-09-08 19:45:15,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4180c950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 07:45:15, skipping insertion in model container [2024-09-08 19:45:15,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:15" (2/3) ... [2024-09-08 19:45:15,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4180c950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 07:45:15, skipping insertion in model container [2024-09-08 19:45:15,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 07:45:15" (3/3) ... [2024-09-08 19:45:15,649 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12.i [2024-09-08 19:45:15,673 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-08 19:45:15,675 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-08 19:45:15,675 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-09-08 19:45:15,704 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-09-08 19:45:15,734 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 19:45:15,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-08 19:45:15,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:45:15,738 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-08 19:45:15,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-09-08 19:45:15,778 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-08 19:45:15,790 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-09-08 19:45:15,795 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@7ece9469, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 19:45:15,795 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-08 19:45:15,862 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-08 19:45:15,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:15,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1375376379, now seen corresponding path program 1 times [2024-09-08 19:45:15,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:15,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512758058] [2024-09-08 19:45:15,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:15,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:16,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:45:16,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512758058] [2024-09-08 19:45:16,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512758058] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 19:45:16,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 19:45:16,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-08 19:45:16,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303024979] [2024-09-08 19:45:16,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 19:45:16,408 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-08 19:45:16,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:45:16,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-08 19:45:16,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-08 19:45:16,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:16,432 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:45:16,433 INFO L475 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) [2024-09-08 19:45:16,433 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:16,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-08 19:45:16,515 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-08 19:45:16,515 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-08 19:45:16,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:16,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1375344666, now seen corresponding path program 1 times [2024-09-08 19:45:16,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:16,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118447929] [2024-09-08 19:45:16,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:16,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-08 19:45:16,543 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-09-08 19:45:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-08 19:45:16,582 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-09-08 19:45:16,583 INFO L326 BasicCegarLoop]: Counterexample is feasible [2024-09-08 19:45:16,584 INFO L785 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-09-08 19:45:16,587 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-08 19:45:16,593 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1] [2024-09-08 19:45:16,595 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (1/2) [2024-09-08 19:45:16,596 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-09-08 19:45:16,596 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-09-08 19:45:16,613 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-09-08 19:45:16,616 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 19:45:16,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-08 19:45:16,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:45:16,641 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-08 19:45:16,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2024-09-08 19:45:16,646 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-08 19:45:16,646 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread2of2ForFork0 ======== [2024-09-08 19:45:16,647 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@7ece9469, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 19:45:16,647 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-08 19:45:16,721 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:45:16,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:16,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1397779644, now seen corresponding path program 1 times [2024-09-08 19:45:16,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:16,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106405725] [2024-09-08 19:45:16,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:16,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:16,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:45:16,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106405725] [2024-09-08 19:45:16,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106405725] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 19:45:16,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 19:45:16,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-08 19:45:16,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888716003] [2024-09-08 19:45:16,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 19:45:16,915 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-08 19:45:16,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:45:16,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-08 19:45:16,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-08 19:45:16,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:16,916 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:45:16,916 INFO L475 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) [2024-09-08 19:45:16,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:17,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:17,034 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-08 19:45:17,035 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:45:17,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:17,035 INFO L85 PathProgramCache]: Analyzing trace with hash 110291617, now seen corresponding path program 1 times [2024-09-08 19:45:17,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:17,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935717766] [2024-09-08 19:45:17,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:17,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:17,324 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:17,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:45:17,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935717766] [2024-09-08 19:45:17,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935717766] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 19:45:17,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553424499] [2024-09-08 19:45:17,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:17,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:45:17,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:45:17,331 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) [2024-09-08 19:45:17,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-08 19:45:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:17,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-08 19:45:17,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 19:45:17,990 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:17,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 19:45:18,208 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:18,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553424499] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 19:45:18,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 19:45:18,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 19 [2024-09-08 19:45:18,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135470146] [2024-09-08 19:45:18,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 19:45:18,209 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-08 19:45:18,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:45:18,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-08 19:45:18,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2024-09-08 19:45:18,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:18,211 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:45:18,211 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 19:45:18,212 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:18,212 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:18,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:18,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-08 19:45:18,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-08 19:45:18,703 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:45:18,704 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:45:18,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:18,704 INFO L85 PathProgramCache]: Analyzing trace with hash 111274720, now seen corresponding path program 1 times [2024-09-08 19:45:18,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:18,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053377929] [2024-09-08 19:45:18,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:18,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:18,996 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:18,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:45:18,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053377929] [2024-09-08 19:45:18,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053377929] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 19:45:18,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843627027] [2024-09-08 19:45:18,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:18,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:45:18,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:45:19,000 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-08 19:45:19,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-08 19:45:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:19,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-08 19:45:19,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 19:45:19,697 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:19,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 19:45:20,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:20,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843627027] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 19:45:20,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 19:45:20,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 23 [2024-09-08 19:45:20,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935813423] [2024-09-08 19:45:20,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 19:45:20,118 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-08 19:45:20,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:45:20,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-08 19:45:20,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2024-09-08 19:45:20,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:20,119 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:45:20,119 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 23 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 19:45:20,120 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:20,120 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2024-09-08 19:45:20,120 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:21,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:21,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-08 19:45:21,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-08 19:45:21,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-08 19:45:21,213 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:45:21,214 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:45:21,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:21,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1155672045, now seen corresponding path program 1 times [2024-09-08 19:45:21,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:21,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951493599] [2024-09-08 19:45:21,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:21,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:21,698 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:21,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:45:21,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951493599] [2024-09-08 19:45:21,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951493599] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 19:45:21,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992187192] [2024-09-08 19:45:21,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:21,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:45:21,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:45:21,703 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-08 19:45:21,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-08 19:45:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:21,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-08 19:45:21,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 19:45:22,590 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:22,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 19:45:23,099 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:23,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992187192] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 19:45:23,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 19:45:23,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2024-09-08 19:45:23,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637782333] [2024-09-08 19:45:23,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 19:45:23,100 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-08 19:45:23,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:45:23,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-08 19:45:23,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1167, Unknown=0, NotChecked=0, Total=1332 [2024-09-08 19:45:23,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:23,101 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:45:23,102 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.1621621621621623) internal successors, (117), 36 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 19:45:23,102 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:23,102 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2024-09-08 19:45:23,102 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2024-09-08 19:45:23,102 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:24,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:24,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-08 19:45:24,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-08 19:45:24,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-08 19:45:24,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-08 19:45:25,162 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-08 19:45:25,164 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:45:25,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:25,165 INFO L85 PathProgramCache]: Analyzing trace with hash 248097085, now seen corresponding path program 2 times [2024-09-08 19:45:25,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:25,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961978035] [2024-09-08 19:45:25,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:25,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:26,092 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 83 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:26,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:45:26,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961978035] [2024-09-08 19:45:26,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961978035] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 19:45:26,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369785603] [2024-09-08 19:45:26,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-08 19:45:26,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:45:26,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:45:26,096 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) [2024-09-08 19:45:26,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-08 19:45:26,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-08 19:45:26,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-08 19:45:26,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-08 19:45:26,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 19:45:26,417 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 60 proven. 6 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-09-08 19:45:26,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 19:45:26,646 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 26 proven. 40 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-09-08 19:45:26,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369785603] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 19:45:26,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 19:45:26,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 8, 8] total 33 [2024-09-08 19:45:26,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815883365] [2024-09-08 19:45:26,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 19:45:26,647 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-08 19:45:26,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:45:26,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-08 19:45:26,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2024-09-08 19:45:26,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:26,648 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:45:26,648 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.6363636363636362) internal successors, (120), 33 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 19:45:26,648 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:26,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2024-09-08 19:45:26,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2024-09-08 19:45:26,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2024-09-08 19:45:26,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:33,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:33,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-08 19:45:33,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-08 19:45:33,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-09-08 19:45:33,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-09-08 19:45:33,546 INFO L785 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-08 19:45:33,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-08 19:45:33,750 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:45:33,752 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-09-08 19:45:33,754 INFO L312 ceAbstractionStarter]: Result for error location thrThread2of2ForFork0 was SAFE (1/3) [2024-09-08 19:45:33,756 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 19:45:33,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-08 19:45:33,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:45:33,757 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-08 19:45:33,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Waiting until timeout for monitored process [2024-09-08 19:45:33,760 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-08 19:45:33,760 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread1of2ForFork0 ======== [2024-09-08 19:45:33,760 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@7ece9469, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 19:45:33,761 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-08 19:45:33,796 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:45:33,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:33,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1865017704, now seen corresponding path program 1 times [2024-09-08 19:45:33,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:33,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406862703] [2024-09-08 19:45:33,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:33,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:33,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:33,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:45:33,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406862703] [2024-09-08 19:45:33,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406862703] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 19:45:33,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 19:45:33,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-08 19:45:33,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361160610] [2024-09-08 19:45:33,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 19:45:33,878 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-08 19:45:33,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:45:33,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-08 19:45:33,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-08 19:45:33,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:33,880 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:45:33,880 INFO L475 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) [2024-09-08 19:45:33,880 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:33,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:33,967 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-08 19:45:33,968 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:45:33,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:33,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1362553991, now seen corresponding path program 1 times [2024-09-08 19:45:33,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:33,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017929017] [2024-09-08 19:45:33,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:33,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:34,108 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:34,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:45:34,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017929017] [2024-09-08 19:45:34,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017929017] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 19:45:34,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477752965] [2024-09-08 19:45:34,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:34,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:45:34,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:45:34,112 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-08 19:45:34,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-08 19:45:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:34,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-08 19:45:34,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 19:45:34,379 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:34,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 19:45:34,506 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:34,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477752965] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 19:45:34,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 19:45:34,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 19 [2024-09-08 19:45:34,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967023360] [2024-09-08 19:45:34,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 19:45:34,508 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-08 19:45:34,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:45:34,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-08 19:45:34,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2024-09-08 19:45:34,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:34,509 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:45:34,509 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 19:45:34,509 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:34,509 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:34,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:34,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-08 19:45:34,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-08 19:45:35,125 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:45:35,126 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:45:35,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:35,126 INFO L85 PathProgramCache]: Analyzing trace with hash -2125615890, now seen corresponding path program 1 times [2024-09-08 19:45:35,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:35,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312703855] [2024-09-08 19:45:35,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:35,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:35,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:35,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:45:35,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312703855] [2024-09-08 19:45:35,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312703855] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 19:45:35,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 19:45:35,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-08 19:45:35,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315386034] [2024-09-08 19:45:35,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 19:45:35,180 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-08 19:45:35,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:45:35,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-08 19:45:35,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-08 19:45:35,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:35,183 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:45:35,183 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 19:45:35,183 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:35,183 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2024-09-08 19:45:35,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:35,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:35,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-08 19:45:35,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 19:45:35,228 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-09-08 19:45:35,228 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:45:35,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:35,229 INFO L85 PathProgramCache]: Analyzing trace with hash 522278432, now seen corresponding path program 2 times [2024-09-08 19:45:35,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:35,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310431260] [2024-09-08 19:45:35,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:35,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:35,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:35,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:45:35,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310431260] [2024-09-08 19:45:35,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310431260] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 19:45:35,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136494070] [2024-09-08 19:45:35,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-08 19:45:35,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:45:35,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:45:35,395 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) [2024-09-08 19:45:35,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-08 19:45:35,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-08 19:45:35,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-08 19:45:35,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-08 19:45:35,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 19:45:35,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:35,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 19:45:35,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:35,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136494070] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 19:45:35,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 19:45:35,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-09-08 19:45:35,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451527217] [2024-09-08 19:45:35,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 19:45:35,797 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-08 19:45:35,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:45:35,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-08 19:45:35,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-09-08 19:45:35,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:35,798 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:45:35,798 INFO L475 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) [2024-09-08 19:45:35,798 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:35,798 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2024-09-08 19:45:35,798 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 19:45:35,798 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:36,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:36,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-08 19:45:36,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 19:45:36,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-08 19:45:36,148 INFO L785 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-08 19:45:36,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-08 19:45:36,349 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:45:36,350 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-09-08 19:45:36,350 INFO L312 ceAbstractionStarter]: Result for error location thrThread1of2ForFork0 was SAFE (2/3) [2024-09-08 19:45:36,354 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 19:45:36,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-08 19:45:36,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:45:36,356 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-08 19:45:36,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (11)] Waiting until timeout for monitored process [2024-09-08 19:45:36,359 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-08 19:45:36,359 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-09-08 19:45:36,359 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@7ece9469, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 19:45:36,360 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-08 19:45:36,402 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-08 19:45:36,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:36,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1058517919, now seen corresponding path program 1 times [2024-09-08 19:45:36,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:36,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667035988] [2024-09-08 19:45:36,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:36,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-08 19:45:36,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:45:36,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667035988] [2024-09-08 19:45:36,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667035988] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 19:45:36,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 19:45:36,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-08 19:45:36,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683049109] [2024-09-08 19:45:36,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 19:45:36,488 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-08 19:45:36,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:45:36,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-08 19:45:36,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-08 19:45:36,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:36,489 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:45:36,489 INFO L475 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) [2024-09-08 19:45:36,489 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:36,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:36,577 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-09-08 19:45:36,577 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-08 19:45:36,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:36,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1383930618, now seen corresponding path program 1 times [2024-09-08 19:45:36,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:36,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49642500] [2024-09-08 19:45:36,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:36,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:36,702 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:36,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:45:36,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49642500] [2024-09-08 19:45:36,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49642500] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 19:45:36,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019232606] [2024-09-08 19:45:36,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:36,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:45:36,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:45:36,709 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-08 19:45:36,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-08 19:45:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:36,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-08 19:45:36,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 19:45:37,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:37,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 19:45:37,647 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:37,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019232606] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 19:45:37,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 19:45:37,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 11] total 25 [2024-09-08 19:45:37,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246767625] [2024-09-08 19:45:37,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 19:45:37,649 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-08 19:45:37,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:45:37,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-08 19:45:37,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2024-09-08 19:45:37,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:37,651 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:45:37,651 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.08) internal successors, (77), 25 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 19:45:37,651 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:37,651 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:38,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:38,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-08 19:45:38,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-08 19:45:38,736 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:45:38,736 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-08 19:45:38,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:38,737 INFO L85 PathProgramCache]: Analyzing trace with hash -439136922, now seen corresponding path program 1 times [2024-09-08 19:45:38,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:38,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554711658] [2024-09-08 19:45:38,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:38,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-08 19:45:38,759 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-09-08 19:45:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-08 19:45:38,777 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-09-08 19:45:38,777 INFO L326 BasicCegarLoop]: Counterexample is feasible [2024-09-08 19:45:38,777 INFO L785 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-09-08 19:45:38,778 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-09-08 19:45:38,778 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-09-08 19:45:38,779 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (3/3) [2024-09-08 19:45:38,780 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-09-08 19:45:38,780 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-09-08 19:45:38,790 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-09-08 19:45:38,793 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 19:45:38,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-08 19:45:38,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:45:38,798 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-08 19:45:38,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (13)] Waiting until timeout for monitored process [2024-09-08 19:45:38,804 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-08 19:45:38,804 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread1of3ForFork0 ======== [2024-09-08 19:45:38,805 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@7ece9469, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 19:45:38,805 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-08 19:45:38,855 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:45:38,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:38,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1152081780, now seen corresponding path program 1 times [2024-09-08 19:45:38,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:38,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894469971] [2024-09-08 19:45:38,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:38,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:38,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:38,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:45:38,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894469971] [2024-09-08 19:45:38,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894469971] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 19:45:38,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 19:45:38,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-08 19:45:38,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122880979] [2024-09-08 19:45:38,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 19:45:38,913 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-08 19:45:38,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:45:38,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-08 19:45:38,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-08 19:45:38,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:38,914 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:45:38,914 INFO L475 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) [2024-09-08 19:45:38,915 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:38,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:38,982 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-09-08 19:45:38,983 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:45:38,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:38,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1875878871, now seen corresponding path program 1 times [2024-09-08 19:45:38,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:38,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787584757] [2024-09-08 19:45:38,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:38,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:39,084 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:39,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:45:39,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787584757] [2024-09-08 19:45:39,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787584757] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 19:45:39,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121798305] [2024-09-08 19:45:39,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:39,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:45:39,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:45:39,087 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-08 19:45:39,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-08 19:45:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:39,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-08 19:45:39,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 19:45:39,279 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:39,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 19:45:39,384 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:39,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121798305] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 19:45:39,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 19:45:39,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2024-09-08 19:45:39,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674016458] [2024-09-08 19:45:39,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 19:45:39,386 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-08 19:45:39,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:45:39,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-08 19:45:39,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-09-08 19:45:39,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:39,387 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:45:39,387 INFO L475 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) [2024-09-08 19:45:39,388 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:39,388 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:39,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:39,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-08 19:45:39,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-08 19:45:39,871 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-08 19:45:39,872 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:45:39,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:39,872 INFO L85 PathProgramCache]: Analyzing trace with hash 2081513092, now seen corresponding path program 1 times [2024-09-08 19:45:39,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:39,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637009743] [2024-09-08 19:45:39,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:39,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:40,072 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:40,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:45:40,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637009743] [2024-09-08 19:45:40,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637009743] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 19:45:40,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674172343] [2024-09-08 19:45:40,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:40,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:45:40,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:45:40,074 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) [2024-09-08 19:45:40,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-08 19:45:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:40,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-08 19:45:40,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 19:45:40,464 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:40,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 19:45:40,797 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:40,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674172343] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 19:45:40,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 19:45:40,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 27 [2024-09-08 19:45:40,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895324102] [2024-09-08 19:45:40,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 19:45:40,798 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-08 19:45:40,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:45:40,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-08 19:45:40,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2024-09-08 19:45:40,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:40,799 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:45:40,800 INFO L475 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) [2024-09-08 19:45:40,800 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:40,800 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2024-09-08 19:45:40,800 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:41,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:41,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-08 19:45:41,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-08 19:45:41,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-08 19:45:41,754 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-08 19:45:41,754 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:45:41,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:41,754 INFO L85 PathProgramCache]: Analyzing trace with hash -483069212, now seen corresponding path program 2 times [2024-09-08 19:45:41,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:41,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239281787] [2024-09-08 19:45:41,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:41,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 134 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:42,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:45:42,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239281787] [2024-09-08 19:45:42,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239281787] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 19:45:42,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295683168] [2024-09-08 19:45:42,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-08 19:45:42,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:45:42,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:45:42,085 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-08 19:45:42,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-08 19:45:42,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-08 19:45:42,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-08 19:45:42,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-08 19:45:42,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 19:45:42,620 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 115 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:42,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 19:45:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 152 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:43,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295683168] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 19:45:43,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 19:45:43,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 43 [2024-09-08 19:45:43,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550181306] [2024-09-08 19:45:43,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 19:45:43,193 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-08 19:45:43,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:45:43,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-08 19:45:43,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=445, Invalid=1361, Unknown=0, NotChecked=0, Total=1806 [2024-09-08 19:45:43,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:43,194 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:45:43,194 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.441860465116279) internal successors, (191), 43 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 19:45:43,194 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:43,195 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2024-09-08 19:45:43,195 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2024-09-08 19:45:43,195 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:47,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:47,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-08 19:45:47,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-08 19:45:47,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-08 19:45:47,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-08 19:45:47,461 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-08 19:45:47,461 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:45:47,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:47,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1997486526, now seen corresponding path program 1 times [2024-09-08 19:45:47,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:47,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519842207] [2024-09-08 19:45:47,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:47,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:47,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:47,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:45:47,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519842207] [2024-09-08 19:45:47,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519842207] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 19:45:47,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 19:45:47,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-08 19:45:47,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257169151] [2024-09-08 19:45:47,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 19:45:47,481 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-08 19:45:47,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:45:47,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-08 19:45:47,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-08 19:45:47,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:47,482 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:45:47,482 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 19:45:47,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:47,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2024-09-08 19:45:47,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2024-09-08 19:45:47,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2024-09-08 19:45:47,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:48,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:48,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-08 19:45:48,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-08 19:45:48,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-08 19:45:48,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 19:45:48,248 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-09-08 19:45:48,248 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:45:48,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:48,249 INFO L85 PathProgramCache]: Analyzing trace with hash 785683592, now seen corresponding path program 2 times [2024-09-08 19:45:48,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:48,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403522815] [2024-09-08 19:45:48,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:48,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:48,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:48,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:45:48,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403522815] [2024-09-08 19:45:48,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403522815] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 19:45:48,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511923394] [2024-09-08 19:45:48,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-08 19:45:48,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:45:48,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:45:48,370 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) [2024-09-08 19:45:48,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-08 19:45:48,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-08 19:45:48,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-08 19:45:48,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-08 19:45:48,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 19:45:48,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:48,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 19:45:48,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:48,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511923394] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 19:45:48,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 19:45:48,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-09-08 19:45:48,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506941436] [2024-09-08 19:45:48,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 19:45:48,753 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-08 19:45:48,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:45:48,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-08 19:45:48,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-09-08 19:45:48,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:48,754 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:45:48,754 INFO L475 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) [2024-09-08 19:45:48,754 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:48,754 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2024-09-08 19:45:48,754 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2024-09-08 19:45:48,754 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2024-09-08 19:45:48,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 19:45:48,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:51,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:51,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-08 19:45:51,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-08 19:45:51,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-09-08 19:45:51,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 19:45:51,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-08 19:45:51,141 INFO L785 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-08 19:45:51,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-08 19:45:51,341 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:45:51,342 INFO L408 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-09-08 19:45:51,342 INFO L312 ceAbstractionStarter]: Result for error location thrThread1of3ForFork0 was SAFE (1/4) [2024-09-08 19:45:51,343 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 19:45:51,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-08 19:45:51,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:45:51,345 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-08 19:45:51,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (18)] Waiting until timeout for monitored process [2024-09-08 19:45:51,348 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-08 19:45:51,348 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-09-08 19:45:51,349 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@7ece9469, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 19:45:51,349 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-08 19:45:51,405 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-08 19:45:51,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:51,405 INFO L85 PathProgramCache]: Analyzing trace with hash -251216148, now seen corresponding path program 1 times [2024-09-08 19:45:51,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:51,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663875766] [2024-09-08 19:45:51,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:51,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:51,465 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-08 19:45:51,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:45:51,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663875766] [2024-09-08 19:45:51,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663875766] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 19:45:51,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 19:45:51,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-08 19:45:51,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393428473] [2024-09-08 19:45:51,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 19:45:51,466 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-08 19:45:51,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:45:51,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-08 19:45:51,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-08 19:45:51,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:51,466 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:45:51,467 INFO L475 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) [2024-09-08 19:45:51,467 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:51,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:51,529 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-09-08 19:45:51,529 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-08 19:45:51,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:51,529 INFO L85 PathProgramCache]: Analyzing trace with hash 835150247, now seen corresponding path program 1 times [2024-09-08 19:45:51,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:51,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014016524] [2024-09-08 19:45:51,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:51,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:51,631 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-08 19:45:51,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:45:51,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014016524] [2024-09-08 19:45:51,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014016524] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 19:45:51,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457908649] [2024-09-08 19:45:51,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:51,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:45:51,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:45:51,634 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) [2024-09-08 19:45:51,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-08 19:45:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:51,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-08 19:45:51,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 19:45:52,216 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-08 19:45:52,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 19:45:52,623 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:52,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457908649] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 19:45:52,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 19:45:52,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 13] total 27 [2024-09-08 19:45:52,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510496162] [2024-09-08 19:45:52,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 19:45:52,624 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-08 19:45:52,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:45:52,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-08 19:45:52,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2024-09-08 19:45:52,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:52,625 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:45:52,625 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.6296296296296298) internal successors, (98), 27 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 19:45:52,625 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:52,625 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:53,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:53,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-08 19:45:53,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-08 19:45:53,573 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-08 19:45:53,574 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-08 19:45:53,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:53,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1089135079, now seen corresponding path program 1 times [2024-09-08 19:45:53,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:53,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740572456] [2024-09-08 19:45:53,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:53,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:53,786 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:53,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:45:53,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740572456] [2024-09-08 19:45:53,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740572456] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 19:45:53,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041296303] [2024-09-08 19:45:53,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:53,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:45:53,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:45:53,790 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) [2024-09-08 19:45:53,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-08 19:45:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:53,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-08 19:45:53,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 19:45:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:54,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 19:45:54,254 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:54,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041296303] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 19:45:54,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 19:45:54,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 11] total 23 [2024-09-08 19:45:54,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310609767] [2024-09-08 19:45:54,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 19:45:54,255 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-08 19:45:54,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:45:54,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-08 19:45:54,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2024-09-08 19:45:54,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:54,256 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:45:54,256 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 19:45:54,256 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:54,256 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2024-09-08 19:45:54,256 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:54,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:54,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-08 19:45:54,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-08 19:45:54,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-09-08 19:45:54,811 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:45:54,812 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-08 19:45:54,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:54,812 INFO L85 PathProgramCache]: Analyzing trace with hash 2033897062, now seen corresponding path program 1 times [2024-09-08 19:45:54,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:54,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542007340] [2024-09-08 19:45:54,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:54,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:54,990 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-08 19:45:54,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:45:54,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542007340] [2024-09-08 19:45:54,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542007340] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 19:45:54,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615842352] [2024-09-08 19:45:54,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:54,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:45:54,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:45:54,993 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-08 19:45:54,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-08 19:45:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:55,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-08 19:45:55,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 19:45:55,364 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-08 19:45:55,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 19:45:55,646 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:55,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615842352] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 19:45:55,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 19:45:55,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 9] total 20 [2024-09-08 19:45:55,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011430264] [2024-09-08 19:45:55,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 19:45:55,647 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-08 19:45:55,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:45:55,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-08 19:45:55,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2024-09-08 19:45:55,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:55,648 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:45:55,648 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.857142857142857) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 19:45:55,648 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:55,648 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2024-09-08 19:45:55,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2024-09-08 19:45:55,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:56,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:56,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-08 19:45:56,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-08 19:45:56,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-08 19:45:56,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-08 19:45:56,645 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-08 19:45:56,645 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-08 19:45:56,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:45:56,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1252200911, now seen corresponding path program 1 times [2024-09-08 19:45:56,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:45:56,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671051531] [2024-09-08 19:45:56,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:56,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:45:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:56,978 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:45:56,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:45:56,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671051531] [2024-09-08 19:45:56,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671051531] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 19:45:56,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217562985] [2024-09-08 19:45:56,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:45:56,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:45:56,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:45:56,981 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) [2024-09-08 19:45:56,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-08 19:45:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:45:57,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-08 19:45:57,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 19:45:57,727 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-08 19:45:57,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 19:45:58,218 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-08 19:45:58,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217562985] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 19:45:58,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 19:45:58,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 11] total 34 [2024-09-08 19:45:58,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609284915] [2024-09-08 19:45:58,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 19:45:58,219 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-08 19:45:58,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:45:58,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-08 19:45:58,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2024-09-08 19:45:58,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:45:58,220 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:45:58,220 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.7058823529411766) internal successors, (126), 34 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 19:45:58,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:45:58,221 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2024-09-08 19:45:58,221 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2024-09-08 19:45:58,221 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2024-09-08 19:45:58,221 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:46:00,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:46:00,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-08 19:46:00,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-08 19:46:00,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-08 19:46:00,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-08 19:46:00,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-09-08 19:46:00,773 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-08 19:46:00,774 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-09-08 19:46:00,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:46:00,774 INFO L85 PathProgramCache]: Analyzing trace with hash -307438928, now seen corresponding path program 1 times [2024-09-08 19:46:00,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:46:00,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073379503] [2024-09-08 19:46:00,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:46:00,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:46:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-08 19:46:00,804 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-09-08 19:46:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-08 19:46:00,854 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-09-08 19:46:00,854 INFO L326 BasicCegarLoop]: Counterexample is feasible [2024-09-08 19:46:00,854 INFO L785 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-09-08 19:46:00,855 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-09-08 19:46:00,856 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-09-08 19:46:00,858 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (2/4) [2024-09-08 19:46:00,858 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-09-08 19:46:00,858 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-09-08 19:46:00,885 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-09-08 19:46:00,887 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 19:46:00,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-08 19:46:00,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:46:00,892 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-08 19:46:00,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (23)] Waiting until timeout for monitored process [2024-09-08 19:46:00,897 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-08 19:46:00,897 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread1of4ForFork0 ======== [2024-09-08 19:46:00,898 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@7ece9469, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 19:46:00,898 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-08 19:46:00,947 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:46:00,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:46:00,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1242931112, now seen corresponding path program 1 times [2024-09-08 19:46:00,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:46:00,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100642305] [2024-09-08 19:46:00,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:46:00,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:46:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:46:01,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:46:01,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:46:01,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100642305] [2024-09-08 19:46:01,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100642305] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 19:46:01,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 19:46:01,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-08 19:46:01,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774678956] [2024-09-08 19:46:01,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 19:46:01,014 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-08 19:46:01,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:46:01,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-08 19:46:01,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-08 19:46:01,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:46:01,014 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:46:01,014 INFO L475 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) [2024-09-08 19:46:01,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:46:01,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:46:01,086 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-09-08 19:46:01,086 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:46:01,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:46:01,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1430384092, now seen corresponding path program 1 times [2024-09-08 19:46:01,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:46:01,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611943668] [2024-09-08 19:46:01,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:46:01,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:46:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:46:01,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:46:01,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:46:01,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611943668] [2024-09-08 19:46:01,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611943668] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 19:46:01,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968660659] [2024-09-08 19:46:01,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:46:01,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:46:01,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:46:01,195 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-08 19:46:01,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-08 19:46:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:46:01,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-08 19:46:01,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 19:46:01,412 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:46:01,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 19:46:01,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:46:01,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968660659] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 19:46:01,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 19:46:01,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2024-09-08 19:46:01,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792588989] [2024-09-08 19:46:01,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 19:46:01,573 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-08 19:46:01,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:46:01,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-08 19:46:01,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2024-09-08 19:46:01,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:46:01,574 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:46:01,574 INFO L475 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) [2024-09-08 19:46:01,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:46:01,575 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:46:12,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:46:12,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-08 19:46:12,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-09-08 19:46:12,747 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-08 19:46:12,747 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:46:12,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:46:12,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1200361482, now seen corresponding path program 1 times [2024-09-08 19:46:12,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:46:12,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061424549] [2024-09-08 19:46:12,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:46:12,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:46:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:46:12,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:46:12,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:46:12,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061424549] [2024-09-08 19:46:12,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061424549] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 19:46:12,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 19:46:12,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-08 19:46:12,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949451427] [2024-09-08 19:46:12,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 19:46:12,763 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-08 19:46:12,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:46:12,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-08 19:46:12,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-08 19:46:12,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:46:12,764 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:46:12,764 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 19:46:12,764 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:46:12,764 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2024-09-08 19:46:12,764 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:46:17,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:46:17,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-08 19:46:17,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 19:46:17,235 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-09-08 19:46:17,235 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:46:17,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:46:17,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1307077028, now seen corresponding path program 2 times [2024-09-08 19:46:17,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:46:17,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627627655] [2024-09-08 19:46:17,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:46:17,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:46:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:46:17,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:46:17,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:46:17,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627627655] [2024-09-08 19:46:17,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627627655] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 19:46:17,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147448635] [2024-09-08 19:46:17,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-08 19:46:17,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:46:17,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:46:17,344 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) [2024-09-08 19:46:17,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-08 19:46:17,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-08 19:46:17,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-08 19:46:17,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-08 19:46:17,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 19:46:17,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:46:17,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 19:46:17,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:46:17,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147448635] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 19:46:17,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 19:46:17,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-09-08 19:46:17,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707512070] [2024-09-08 19:46:17,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 19:46:17,695 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-08 19:46:17,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:46:17,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-08 19:46:17,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-09-08 19:46:17,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:46:17,695 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:46:17,696 INFO L475 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) [2024-09-08 19:46:17,696 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:46:17,696 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2024-09-08 19:46:17,696 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 19:46:17,696 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:46:27,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:46:27,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-08 19:46:27,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 19:46:27,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-08 19:46:27,231 INFO L785 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-08 19:46:27,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-09-08 19:46:27,431 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:46:27,434 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-09-08 19:46:27,434 INFO L312 ceAbstractionStarter]: Result for error location thrThread1of4ForFork0 was SAFE (1/5) [2024-09-08 19:46:27,436 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 19:46:27,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-08 19:46:27,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:46:27,438 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-08 19:46:27,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (26)] Waiting until timeout for monitored process [2024-09-08 19:46:27,441 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-08 19:46:27,441 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread2of4ForFork0 ======== [2024-09-08 19:46:27,442 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@7ece9469, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 19:46:27,442 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-08 19:46:27,512 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:46:27,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:46:27,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1395134607, now seen corresponding path program 1 times [2024-09-08 19:46:27,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:46:27,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881212534] [2024-09-08 19:46:27,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:46:27,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:46:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:46:27,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:46:27,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:46:27,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881212534] [2024-09-08 19:46:27,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881212534] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 19:46:27,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 19:46:27,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-08 19:46:27,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434970067] [2024-09-08 19:46:27,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 19:46:27,591 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-08 19:46:27,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:46:27,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-08 19:46:27,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-08 19:46:27,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:46:27,592 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:46:27,592 INFO L475 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) [2024-09-08 19:46:27,592 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:46:27,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:46:27,653 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-09-08 19:46:27,653 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:46:27,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:46:27,653 INFO L85 PathProgramCache]: Analyzing trace with hash 2093398581, now seen corresponding path program 1 times [2024-09-08 19:46:27,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:46:27,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163151239] [2024-09-08 19:46:27,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:46:27,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:46:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:46:27,768 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:46:27,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:46:27,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163151239] [2024-09-08 19:46:27,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163151239] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 19:46:27,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7510545] [2024-09-08 19:46:27,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:46:27,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:46:27,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:46:27,775 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) [2024-09-08 19:46:27,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-08 19:46:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:46:27,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-08 19:46:27,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 19:46:28,593 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:46:28,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 19:46:28,860 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:46:28,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7510545] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 19:46:28,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 19:46:28,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 10] total 24 [2024-09-08 19:46:28,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728537091] [2024-09-08 19:46:28,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 19:46:28,861 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-08 19:46:28,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:46:28,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-08 19:46:28,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2024-09-08 19:46:28,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:46:28,862 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:46:28,862 INFO L475 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) [2024-09-08 19:46:28,862 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:46:28,862 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:46:29,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:46:29,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-08 19:46:29,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-09-08 19:46:30,004 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,27 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:46:30,005 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:46:30,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:46:30,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1968600639, now seen corresponding path program 1 times [2024-09-08 19:46:30,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:46:30,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931387049] [2024-09-08 19:46:30,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:46:30,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:46:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:46:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-08 19:46:30,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:46:30,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931387049] [2024-09-08 19:46:30,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931387049] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 19:46:30,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059490241] [2024-09-08 19:46:30,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:46:30,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:46:30,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:46:30,198 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) [2024-09-08 19:46:30,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-08 19:46:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:46:30,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-08 19:46:30,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 19:46:30,804 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-08 19:46:30,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 19:46:31,016 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-08 19:46:31,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059490241] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 19:46:31,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 19:46:31,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-09-08 19:46:31,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776428071] [2024-09-08 19:46:31,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 19:46:31,018 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-08 19:46:31,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:46:31,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-08 19:46:31,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-09-08 19:46:31,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:46:31,022 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:46:31,022 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.722222222222222) internal successors, (121), 17 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 19:46:31,022 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:46:31,023 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2024-09-08 19:46:31,023 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:46:31,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:46:31,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-08 19:46:31,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-08 19:46:31,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-09-08 19:46:31,774 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,28 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:46:31,774 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:46:31,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:46:31,775 INFO L85 PathProgramCache]: Analyzing trace with hash -772198044, now seen corresponding path program 1 times [2024-09-08 19:46:31,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:46:31,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147366656] [2024-09-08 19:46:31,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:46:31,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:46:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:46:32,105 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:46:32,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:46:32,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147366656] [2024-09-08 19:46:32,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147366656] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 19:46:32,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979689374] [2024-09-08 19:46:32,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:46:32,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:46:32,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:46:32,107 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) [2024-09-08 19:46:32,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-08 19:46:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:46:32,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-08 19:46:32,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 19:46:33,097 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 26 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:46:33,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 19:46:33,505 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 29 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:46:33,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979689374] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 19:46:33,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 19:46:33,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 26 [2024-09-08 19:46:33,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443996773] [2024-09-08 19:46:33,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 19:46:33,506 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-08 19:46:33,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:46:33,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-08 19:46:33,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2024-09-08 19:46:33,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:46:33,507 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:46:33,507 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 26 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 19:46:33,507 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:46:33,507 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2024-09-08 19:46:33,507 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2024-09-08 19:46:33,507 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:46:35,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:46:35,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-08 19:46:35,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-08 19:46:35,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-08 19:46:35,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-09-08 19:46:35,624 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:46:35,624 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:46:35,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:46:35,625 INFO L85 PathProgramCache]: Analyzing trace with hash 2080708797, now seen corresponding path program 1 times [2024-09-08 19:46:35,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:46:35,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279857994] [2024-09-08 19:46:35,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:46:35,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:46:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:46:35,988 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 18 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 19:46:35,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:46:35,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279857994] [2024-09-08 19:46:35,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279857994] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 19:46:35,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829358286] [2024-09-08 19:46:35,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:46:35,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:46:35,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:46:35,991 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-08 19:46:35,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-08 19:46:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:46:36,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-08 19:46:36,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 19:46:36,503 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 25 proven. 38 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-08 19:46:36,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 19:46:37,058 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 25 proven. 38 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-08 19:46:37,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829358286] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 19:46:37,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 19:46:37,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 25 [2024-09-08 19:46:37,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801765252] [2024-09-08 19:46:37,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 19:46:37,059 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-08 19:46:37,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:46:37,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-08 19:46:37,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2024-09-08 19:46:37,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:46:37,060 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:46:37,060 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.6) internal successors, (190), 25 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 19:46:37,060 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:46:37,060 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2024-09-08 19:46:37,061 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2024-09-08 19:46:37,061 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2024-09-08 19:46:37,061 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:46:38,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:46:38,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-08 19:46:38,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-08 19:46:38,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-08 19:46:38,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-08 19:46:38,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-09-08 19:46:38,737 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,30 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:46:38,737 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:46:38,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:46:38,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1490871019, now seen corresponding path program 1 times [2024-09-08 19:46:38,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:46:38,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653411579] [2024-09-08 19:46:38,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:46:38,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:46:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:46:39,007 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 55 proven. 120 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-08 19:46:39,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:46:39,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653411579] [2024-09-08 19:46:39,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653411579] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 19:46:39,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629804450] [2024-09-08 19:46:39,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:46:39,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:46:39,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:46:39,009 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-08 19:46:39,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-08 19:46:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:46:39,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-08 19:46:39,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 19:46:39,738 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 32 proven. 156 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-08 19:46:39,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 19:46:40,320 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 32 proven. 156 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-08 19:46:40,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629804450] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 19:46:40,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 19:46:40,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 15] total 38 [2024-09-08 19:46:40,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152153333] [2024-09-08 19:46:40,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 19:46:40,320 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-08 19:46:40,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:46:40,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-08 19:46:40,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1150, Unknown=0, NotChecked=0, Total=1406 [2024-09-08 19:46:40,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:46:40,321 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:46:40,322 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 6.868421052631579) internal successors, (261), 38 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 19:46:40,322 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:46:40,322 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2024-09-08 19:46:40,322 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2024-09-08 19:46:40,322 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 38 states. [2024-09-08 19:46:40,322 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 48 states. [2024-09-08 19:46:40,322 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:46:43,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:46:43,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-08 19:46:43,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-08 19:46:43,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-08 19:46:43,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-08 19:46:43,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-09-08 19:46:43,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-09-08 19:46:43,691 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-08 19:46:43,692 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-08 19:46:43,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 19:46:43,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1961845871, now seen corresponding path program 2 times [2024-09-08 19:46:43,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 19:46:43,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372960023] [2024-09-08 19:46:43,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 19:46:43,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 19:46:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 19:46:44,042 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 228 proven. 155 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-09-08 19:46:44,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 19:46:44,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372960023] [2024-09-08 19:46:44,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372960023] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-08 19:46:44,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180088255] [2024-09-08 19:46:44,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-08 19:46:44,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-08 19:46:44,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 19:46:44,044 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-08 19:46:44,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-08 19:46:44,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-08 19:46:44,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-08 19:46:44,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-08 19:46:44,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-08 19:46:45,164 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 483 proven. 120 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-08 19:46:45,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-08 19:46:46,283 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 569 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-08 19:46:46,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180088255] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-08 19:46:46,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-08 19:46:46,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 24, 24] total 57 [2024-09-08 19:46:46,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488637141] [2024-09-08 19:46:46,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-08 19:46:46,286 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-09-08 19:46:46,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 19:46:46,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-09-08 19:46:46,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=2372, Unknown=0, NotChecked=0, Total=3192 [2024-09-08 19:46:46,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 19:46:46,288 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 19:46:46,288 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.807017543859649) internal successors, (331), 57 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 19:46:46,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-09-08 19:46:46,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2024-09-08 19:46:46,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2024-09-08 19:46:46,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 38 states. [2024-09-08 19:46:46,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 48 states. [2024-09-08 19:46:46,289 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 91 states. [2024-09-08 19:46:46,289 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.