./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-lit/sssc12-pthread.i --full-output --traceabstraction.dfs.order.used.in.por LOOP_LOCKSTEP --traceabstraction.additional.conditional.commutativity.checking COUNTEREXAMPLE --traceabstraction.criterion.for.conditional.commutativity.checking RANDOM --traceabstraction.probability.for.random.criterion 20 --traceabstraction.seed.for.random.criterion 213 -tc /storage/repos/ultimate/releaseScripts/default/benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b86fb0b7 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../../../trunk/examples/svcomp/pthread-lit/sssc12-pthread.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 94001a9ab0492f7774a7e81f183179cf0060947b701e48f51b2989eec22ae051 --traceabstraction.dfs.order.used.in.por LOOP_LOCKSTEP --traceabstraction.additional.conditional.commutativity.checking COUNTEREXAMPLE --traceabstraction.criterion.for.conditional.commutativity.checking RANDOM --traceabstraction.probability.for.random.criterion 20 --traceabstraction.seed.for.random.criterion 213 -tc /storage/repos/ultimate/releaseScripts/default/benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.conditional-comm-b86fb0b-m [2024-10-17 21:46:57,474 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-17 21:46:57,548 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-10-17 21:46:57,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-17 21:46:57,555 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-17 21:46:57,585 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-17 21:46:57,586 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-17 21:46:57,586 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-17 21:46:57,587 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-17 21:46:57,591 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-17 21:46:57,591 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-17 21:46:57,592 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-17 21:46:57,592 INFO L153 SettingsManager]: * Use SBE=true [2024-10-17 21:46:57,592 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-17 21:46:57,593 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-17 21:46:57,593 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-17 21:46:57,593 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-17 21:46:57,593 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-17 21:46:57,593 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-17 21:46:57,594 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-17 21:46:57,594 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-17 21:46:57,595 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-17 21:46:57,595 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-17 21:46:57,595 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-17 21:46:57,595 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-17 21:46:57,595 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-17 21:46:57,596 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-17 21:46:57,596 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-17 21:46:57,596 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-17 21:46:57,596 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-17 21:46:57,597 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-17 21:46:57,597 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-17 21:46:57,597 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-17 21:46:57,597 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-10-17 21:46:57,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-17 21:46:57,598 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-17 21:46:57,599 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-10-17 21:46:57,599 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-17 21:46:57,600 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-17 21:46:57,600 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-10-17 21:46:57,600 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-10-17 21:46:57,600 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94001a9ab0492f7774a7e81f183179cf0060947b701e48f51b2989eec22ae051 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: DFS Order used in POR -> LOOP_LOCKSTEP Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional conditional commutativity checking -> COUNTEREXAMPLE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Criterion for conditional commutativity checking -> RANDOM Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Probability for random criterion as percentage -> 20 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Seed for random criterion -> 213 [2024-10-17 21:46:57,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-17 21:46:57,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-17 21:46:57,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-17 21:46:57,917 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-17 21:46:57,917 INFO L274 PluginConnector]: CDTParser initialized [2024-10-17 21:46:57,919 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread-lit/sssc12-pthread.i [2024-10-17 21:46:59,352 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-17 21:46:59,615 INFO L384 CDTParser]: Found 1 translation units. [2024-10-17 21:46:59,616 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/sssc12-pthread.i [2024-10-17 21:46:59,636 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/fadd5c801/5f24589972d64d4b8ab8df50ea641e38/FLAG728e61d57 [2024-10-17 21:46:59,655 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/fadd5c801/5f24589972d64d4b8ab8df50ea641e38 [2024-10-17 21:46:59,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-17 21:46:59,660 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-17 21:46:59,662 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-17 21:46:59,663 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-17 21:46:59,669 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-17 21:46:59,670 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 09:46:59" (1/1) ... [2024-10-17 21:46:59,670 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50c2f663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 09:46:59, skipping insertion in model container [2024-10-17 21:46:59,671 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 09:46:59" (1/1) ... [2024-10-17 21:46:59,714 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-17 21:47:00,158 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/sssc12-pthread.i[47777,47790] [2024-10-17 21:47:00,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-17 21:47:00,205 INFO L200 MainTranslator]: Completed pre-run [2024-10-17 21:47:00,243 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/sssc12-pthread.i[47777,47790] [2024-10-17 21:47:00,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-17 21:47:00,353 INFO L204 MainTranslator]: Completed translation [2024-10-17 21:47:00,353 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 09:47:00 WrapperNode [2024-10-17 21:47:00,354 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-17 21:47:00,355 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-17 21:47:00,355 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-17 21:47:00,355 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-17 21:47:00,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 09:47:00" (1/1) ... [2024-10-17 21:47:00,379 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 09:47:00" (1/1) ... [2024-10-17 21:47:00,401 INFO L138 Inliner]: procedures = 272, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2024-10-17 21:47:00,402 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-17 21:47:00,402 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-17 21:47:00,402 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-17 21:47:00,403 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-17 21:47:00,410 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 09:47:00" (1/1) ... [2024-10-17 21:47:00,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 09:47:00" (1/1) ... [2024-10-17 21:47:00,413 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 09:47:00" (1/1) ... [2024-10-17 21:47:00,413 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 09:47:00" (1/1) ... [2024-10-17 21:47:00,419 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 09:47:00" (1/1) ... [2024-10-17 21:47:00,422 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 09:47:00" (1/1) ... [2024-10-17 21:47:00,423 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 09:47:00" (1/1) ... [2024-10-17 21:47:00,424 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 09:47:00" (1/1) ... [2024-10-17 21:47:00,426 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-17 21:47:00,427 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-17 21:47:00,427 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-17 21:47:00,428 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-17 21:47:00,428 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 09:47:00" (1/1) ... [2024-10-17 21:47:00,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-17 21:47:00,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:47:00,463 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) [2024-10-17 21:47:00,465 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 [2024-10-17 21:47:00,503 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2024-10-17 21:47:00,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2024-10-17 21:47:00,504 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-17 21:47:00,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-17 21:47:00,504 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-17 21:47:00,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-17 21:47:00,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-17 21:47:00,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-17 21:47:00,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-17 21:47:00,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-17 21:47:00,506 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-17 21:47:00,627 INFO L238 CfgBuilder]: Building ICFG [2024-10-17 21:47:00,629 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-17 21:47:00,776 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-17 21:47:00,777 INFO L287 CfgBuilder]: Performing block encoding [2024-10-17 21:47:00,931 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-17 21:47:00,932 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-17 21:47:00,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 09:47:00 BoogieIcfgContainer [2024-10-17 21:47:00,933 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-17 21:47:00,936 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-17 21:47:00,936 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-17 21:47:00,940 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-17 21:47:00,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 09:46:59" (1/3) ... [2024-10-17 21:47:00,941 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9aa97a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 09:47:00, skipping insertion in model container [2024-10-17 21:47:00,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 09:47:00" (2/3) ... [2024-10-17 21:47:00,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9aa97a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 09:47:00, skipping insertion in model container [2024-10-17 21:47:00,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 09:47:00" (3/3) ... [2024-10-17 21:47:00,946 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12-pthread.i [2024-10-17 21:47:00,965 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-17 21:47:00,965 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-17 21:47:00,966 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-17 21:47:01,004 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-17 21:47:01,042 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 21:47:01,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 21:47:01,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:47:01,045 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) [2024-10-17 21:47:01,046 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 [2024-10-17 21:47:01,134 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 21:47:01,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:01,156 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-17 21:47:01,163 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@16e436e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=RANDOM, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=20, mConComCheckerRandomSeed=213, mConComCheckerConditionCriterion=false [2024-10-17 21:47:01,164 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 21:47:01,692 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 21:47:01,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:01,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1616345057, now seen corresponding path program 1 times [2024-10-17 21:47:01,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:47:01,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695826232] [2024-10-17 21:47:01,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:01,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:47:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:02,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:02,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:47:02,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695826232] [2024-10-17 21:47:02,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695826232] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 21:47:02,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 21:47:02,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-17 21:47:02,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670253774] [2024-10-17 21:47:02,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 21:47:02,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-17 21:47:02,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:47:02,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-17 21:47:02,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-17 21:47:02,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:02,343 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:47:02,344 INFO L472 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) [2024-10-17 21:47:02,344 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:02,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 21:47:02,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-17 21:47:02,569 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 21:47:02,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:02,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1616376770, now seen corresponding path program 1 times [2024-10-17 21:47:02,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:47:02,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801970618] [2024-10-17 21:47:02,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:02,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:47:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 21:47:02,597 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-17 21:47:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 21:47:02,633 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-17 21:47:02,634 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-17 21:47:02,635 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-10-17 21:47:02,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-17 21:47:02,644 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-17 21:47:02,645 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (1/2) [2024-10-17 21:47:02,646 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-17 21:47:02,646 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-17 21:47:02,666 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-17 21:47:02,668 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 21:47:02,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 21:47:02,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:47:02,695 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) [2024-10-17 21:47:02,697 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 [2024-10-17 21:47:02,739 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 21:47:02,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:02,741 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread2of2ForFork0 ======== [2024-10-17 21:47:02,742 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@16e436e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=RANDOM, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=20, mConComCheckerRandomSeed=213, mConComCheckerConditionCriterion=false [2024-10-17 21:47:02,745 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 21:47:03,476 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 21:47:03,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:03,477 INFO L85 PathProgramCache]: Analyzing trace with hash -2138984618, now seen corresponding path program 1 times [2024-10-17 21:47:03,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:47:03,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441920338] [2024-10-17 21:47:03,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:03,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:47:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:03,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:03,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:47:03,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441920338] [2024-10-17 21:47:03,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441920338] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 21:47:03,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 21:47:03,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-17 21:47:03,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876376255] [2024-10-17 21:47:03,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 21:47:03,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-17 21:47:03,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:47:03,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-17 21:47:03,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-17 21:47:03,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:03,688 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:47:03,688 INFO L472 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) [2024-10-17 21:47:03,688 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:03,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:03,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-17 21:47:03,917 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 21:47:03,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:03,918 INFO L85 PathProgramCache]: Analyzing trace with hash 503857917, now seen corresponding path program 1 times [2024-10-17 21:47:03,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:47:03,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041517582] [2024-10-17 21:47:03,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:03,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:47:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:04,150 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:04,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:47:04,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041517582] [2024-10-17 21:47:04,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041517582] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 21:47:04,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292585548] [2024-10-17 21:47:04,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:04,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:47:04,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:47:04,155 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) [2024-10-17 21:47:04,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-17 21:47:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:04,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-17 21:47:04,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 21:47:05,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:05,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 21:47:05,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:05,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292585548] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 21:47:05,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 21:47:05,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 10] total 24 [2024-10-17 21:47:05,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566039635] [2024-10-17 21:47:05,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 21:47:05,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-17 21:47:05,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:47:05,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-17 21:47:05,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2024-10-17 21:47:05,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:05,798 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:47:05,798 INFO L472 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) [2024-10-17 21:47:05,798 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:05,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:07,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:07,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-17 21:47:07,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-17 21:47:07,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:47:07,530 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 21:47:07,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:07,531 INFO L85 PathProgramCache]: Analyzing trace with hash 797891780, now seen corresponding path program 1 times [2024-10-17 21:47:07,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:47:07,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112441668] [2024-10-17 21:47:07,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:07,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:47:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 21:47:07,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:47:07,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112441668] [2024-10-17 21:47:07,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112441668] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 21:47:07,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627854318] [2024-10-17 21:47:07,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:07,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:47:07,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:47:07,853 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) [2024-10-17 21:47:07,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-17 21:47:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:07,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-17 21:47:07,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 21:47:08,259 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 21:47:08,260 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 21:47:08,520 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 21:47:08,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627854318] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 21:47:08,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 21:47:08,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 22 [2024-10-17 21:47:08,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641122452] [2024-10-17 21:47:08,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 21:47:08,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-17 21:47:08,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:47:08,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-17 21:47:08,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-10-17 21:47:08,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:08,525 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:47:08,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.2272727272727275) internal successors, (93), 22 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 21:47:08,526 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:08,526 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2024-10-17 21:47:08,526 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:09,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:09,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-17 21:47:09,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-10-17 21:47:09,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-17 21:47:10,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:47:10,118 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 21:47:10,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:10,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1472871341, now seen corresponding path program 2 times [2024-10-17 21:47:10,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:47:10,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724476440] [2024-10-17 21:47:10,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:10,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:47:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:10,470 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-17 21:47:10,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:47:10,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724476440] [2024-10-17 21:47:10,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724476440] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 21:47:10,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82797805] [2024-10-17 21:47:10,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-17 21:47:10,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:47:10,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:47:10,473 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) [2024-10-17 21:47:10,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-17 21:47:10,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-17 21:47:10,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 21:47:10,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-17 21:47:10,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 21:47:10,943 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 13 proven. 64 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 21:47:10,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 21:47:11,319 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 13 proven. 64 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 21:47:11,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82797805] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 21:47:11,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 21:47:11,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 31 [2024-10-17 21:47:11,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644217876] [2024-10-17 21:47:11,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 21:47:11,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-17 21:47:11,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:47:11,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-17 21:47:11,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2024-10-17 21:47:11,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:11,323 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:47:11,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.161290322580645) internal successors, (129), 31 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 21:47:11,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:11,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2024-10-17 21:47:11,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2024-10-17 21:47:11,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:13,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:13,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-17 21:47:13,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-10-17 21:47:13,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-10-17 21:47:13,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-17 21:47:13,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-17 21:47:13,436 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 21:47:13,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:13,437 INFO L85 PathProgramCache]: Analyzing trace with hash -179813764, now seen corresponding path program 3 times [2024-10-17 21:47:13,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:47:13,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365705046] [2024-10-17 21:47:13,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:13,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:47:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:13,955 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 105 proven. 42 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-10-17 21:47:13,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:47:13,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365705046] [2024-10-17 21:47:13,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365705046] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 21:47:13,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814429712] [2024-10-17 21:47:13,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-17 21:47:13,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:47:13,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:47:13,958 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) [2024-10-17 21:47:13,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-17 21:47:14,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-17 21:47:14,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 21:47:14,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-17 21:47:14,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 21:47:15,336 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 122 proven. 25 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-10-17 21:47:15,336 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 21:47:16,079 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 127 proven. 31 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-10-17 21:47:16,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814429712] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 21:47:16,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 21:47:16,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 15] total 36 [2024-10-17 21:47:16,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622655169] [2024-10-17 21:47:16,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 21:47:16,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-17 21:47:16,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:47:16,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-17 21:47:16,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1020, Unknown=0, NotChecked=0, Total=1260 [2024-10-17 21:47:16,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:16,082 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:47:16,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.638888888888889) internal successors, (131), 36 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 21:47:16,083 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:16,083 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2024-10-17 21:47:16,083 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2024-10-17 21:47:16,083 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2024-10-17 21:47:16,083 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:22,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:22,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-17 21:47:22,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-10-17 21:47:22,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2024-10-17 21:47:22,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-17 21:47:22,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-17 21:47:22,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:47:22,645 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 21:47:22,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:22,646 INFO L85 PathProgramCache]: Analyzing trace with hash 876964903, now seen corresponding path program 1 times [2024-10-17 21:47:22,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:47:22,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070141271] [2024-10-17 21:47:22,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:22,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:47:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 265 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:23,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:47:23,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070141271] [2024-10-17 21:47:23,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070141271] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 21:47:23,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687184403] [2024-10-17 21:47:23,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:23,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:47:23,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:47:23,574 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 21:47:23,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-17 21:47:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:23,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-17 21:47:23,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 21:47:23,964 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 261 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-17 21:47:23,965 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 21:47:24,111 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 313 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 21:47:24,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687184403] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-17 21:47:24,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-17 21:47:24,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [23, 14] total 30 [2024-10-17 21:47:24,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360580255] [2024-10-17 21:47:24,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 21:47:24,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-17 21:47:24,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:47:24,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-17 21:47:24,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=583, Unknown=0, NotChecked=0, Total=870 [2024-10-17 21:47:24,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:24,114 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:47:24,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 21:47:24,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:24,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2024-10-17 21:47:24,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 60 states. [2024-10-17 21:47:24,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 162 states. [2024-10-17 21:47:24,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 38 states. [2024-10-17 21:47:24,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:40,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:40,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-10-17 21:47:40,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2024-10-17 21:47:40,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 308 states. [2024-10-17 21:47:40,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-10-17 21:47:40,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-17 21:47:40,222 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-17 21:47:40,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-17 21:47:40,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-17 21:47:40,429 INFO L414 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2024-10-17 21:47:40,429 INFO L312 ceAbstractionStarter]: Result for error location thrThread2of2ForFork0 was SAFE (1/3) [2024-10-17 21:47:40,436 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 21:47:40,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 21:47:40,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:47:40,439 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 21:47:40,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (9)] Waiting until timeout for monitored process [2024-10-17 21:47:40,470 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 21:47:40,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:40,470 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread1of2ForFork0 ======== [2024-10-17 21:47:40,471 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@16e436e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=RANDOM, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=20, mConComCheckerRandomSeed=213, mConComCheckerConditionCriterion=false [2024-10-17 21:47:40,471 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 21:47:40,816 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 21:47:40,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:40,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1276656721, now seen corresponding path program 1 times [2024-10-17 21:47:40,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:47:40,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970017114] [2024-10-17 21:47:40,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:40,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:47:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:40,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:40,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:47:40,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970017114] [2024-10-17 21:47:40,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970017114] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 21:47:40,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 21:47:40,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-17 21:47:40,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050175770] [2024-10-17 21:47:40,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 21:47:40,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-17 21:47:40,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:47:40,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-17 21:47:40,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-17 21:47:40,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:40,940 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:47:40,940 INFO L472 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) [2024-10-17 21:47:40,940 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:41,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:41,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-17 21:47:41,239 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 21:47:41,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:41,240 INFO L85 PathProgramCache]: Analyzing trace with hash 2120757025, now seen corresponding path program 1 times [2024-10-17 21:47:41,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:47:41,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568002764] [2024-10-17 21:47:41,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:41,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:47:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:41,434 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:41,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:47:41,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568002764] [2024-10-17 21:47:41,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568002764] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 21:47:41,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764632248] [2024-10-17 21:47:41,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:41,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:47:41,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:47:41,437 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) [2024-10-17 21:47:41,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-17 21:47:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:41,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-17 21:47:41,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 21:47:41,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:41,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 21:47:42,065 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:42,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764632248] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 21:47:42,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 21:47:42,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2024-10-17 21:47:42,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275957724] [2024-10-17 21:47:42,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 21:47:42,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-17 21:47:42,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:47:42,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-17 21:47:42,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-10-17 21:47:42,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:42,068 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:47:42,068 INFO L472 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) [2024-10-17 21:47:42,068 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:42,071 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:42,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:42,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-17 21:47:42,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-17 21:47:42,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-17 21:47:42,603 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 21:47:42,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:42,604 INFO L85 PathProgramCache]: Analyzing trace with hash 410981222, now seen corresponding path program 1 times [2024-10-17 21:47:42,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:47:42,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299788549] [2024-10-17 21:47:42,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:42,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:47:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:42,883 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:42,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:47:42,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299788549] [2024-10-17 21:47:42,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299788549] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 21:47:42,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734544534] [2024-10-17 21:47:42,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:42,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:47:42,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:47:42,886 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 21:47:42,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-17 21:47:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:42,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-17 21:47:42,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 21:47:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:43,353 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 21:47:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:43,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734544534] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 21:47:43,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 21:47:43,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 27 [2024-10-17 21:47:43,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386448120] [2024-10-17 21:47:43,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 21:47:43,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-17 21:47:43,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:47:43,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-17 21:47:43,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2024-10-17 21:47:43,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:43,636 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:47:43,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.888888888888889) internal successors, (105), 27 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 21:47:43,637 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:43,637 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-10-17 21:47:43,637 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:44,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:44,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-17 21:47:44,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-17 21:47:44,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-17 21:47:44,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-17 21:47:44,679 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 21:47:44,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:44,680 INFO L85 PathProgramCache]: Analyzing trace with hash -181206010, now seen corresponding path program 2 times [2024-10-17 21:47:44,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:47:44,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838124333] [2024-10-17 21:47:44,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:44,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:47:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:45,076 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 129 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:45,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:47:45,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838124333] [2024-10-17 21:47:45,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838124333] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 21:47:45,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677338304] [2024-10-17 21:47:45,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-17 21:47:45,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:47:45,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:47:45,080 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) [2024-10-17 21:47:45,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-17 21:47:45,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-17 21:47:45,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 21:47:45,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-17 21:47:45,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 21:47:45,695 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 108 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:45,695 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 21:47:46,165 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 144 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:46,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677338304] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 21:47:46,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 21:47:46,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 41 [2024-10-17 21:47:46,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629090267] [2024-10-17 21:47:46,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 21:47:46,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-17 21:47:46,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:47:46,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-17 21:47:46,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=1202, Unknown=0, NotChecked=0, Total=1640 [2024-10-17 21:47:46,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:46,168 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:47:46,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.8048780487804876) internal successors, (156), 41 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 21:47:46,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:46,169 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-10-17 21:47:46,169 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2024-10-17 21:47:46,169 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:48,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:48,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-17 21:47:48,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-17 21:47:48,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-17 21:47:48,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-17 21:47:49,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:47:49,038 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 21:47:49,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:49,154 INFO L85 PathProgramCache]: Analyzing trace with hash 218728394, now seen corresponding path program 1 times [2024-10-17 21:47:49,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:47:49,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389135504] [2024-10-17 21:47:49,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:49,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:47:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:49,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:47:49,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389135504] [2024-10-17 21:47:49,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389135504] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 21:47:49,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 21:47:49,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-17 21:47:49,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452395021] [2024-10-17 21:47:49,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 21:47:49,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 21:47:49,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:47:49,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 21:47:49,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 21:47:49,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:49,245 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:47:49,245 INFO L472 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) [2024-10-17 21:47:49,245 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:49,245 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2024-10-17 21:47:49,245 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2024-10-17 21:47:49,246 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2024-10-17 21:47:49,246 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:49,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:49,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-17 21:47:49,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-17 21:47:49,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-17 21:47:49,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 21:47:49,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-17 21:47:49,407 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 21:47:49,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:49,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1122258710, now seen corresponding path program 2 times [2024-10-17 21:47:49,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:47:49,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996742004] [2024-10-17 21:47:49,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:49,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:47:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:49,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:49,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:47:49,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996742004] [2024-10-17 21:47:49,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996742004] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 21:47:49,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243384425] [2024-10-17 21:47:49,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-17 21:47:49,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:47:49,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:47:49,680 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 21:47:49,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-17 21:47:49,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-17 21:47:49,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 21:47:49,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-17 21:47:49,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 21:47:49,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:49,943 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 21:47:50,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:50,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243384425] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 21:47:50,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 21:47:50,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-10-17 21:47:50,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223958139] [2024-10-17 21:47:50,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 21:47:50,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-17 21:47:50,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:47:50,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-17 21:47:50,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-10-17 21:47:50,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:50,123 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:47:50,123 INFO L472 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) [2024-10-17 21:47:50,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:50,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2024-10-17 21:47:50,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2024-10-17 21:47:50,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2024-10-17 21:47:50,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 21:47:50,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:50,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:50,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-17 21:47:50,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-17 21:47:50,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-10-17 21:47:50,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 21:47:50,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-17 21:47:50,933 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-17 21:47:50,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-17 21:47:51,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-17 21:47:51,136 INFO L414 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-10-17 21:47:51,136 INFO L312 ceAbstractionStarter]: Result for error location thrThread1of2ForFork0 was SAFE (2/3) [2024-10-17 21:47:51,140 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 21:47:51,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 21:47:51,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:47:51,142 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 21:47:51,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (14)] Waiting until timeout for monitored process [2024-10-17 21:47:51,180 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 21:47:51,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:51,181 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-17 21:47:51,182 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@16e436e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=RANDOM, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=20, mConComCheckerRandomSeed=213, mConComCheckerConditionCriterion=false [2024-10-17 21:47:51,182 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 21:47:51,595 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 21:47:51,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:51,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1725124318, now seen corresponding path program 1 times [2024-10-17 21:47:51,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:47:51,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269541229] [2024-10-17 21:47:51,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:51,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:47:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:51,731 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 21:47:51,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:47:51,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269541229] [2024-10-17 21:47:51,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269541229] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 21:47:51,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 21:47:51,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-17 21:47:51,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640321013] [2024-10-17 21:47:51,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 21:47:51,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-17 21:47:51,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:47:51,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-17 21:47:51,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-17 21:47:51,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:51,733 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:47:51,734 INFO L472 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) [2024-10-17 21:47:51,734 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:51,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:51,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-17 21:47:51,892 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 21:47:51,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:51,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1123838779, now seen corresponding path program 1 times [2024-10-17 21:47:51,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:47:51,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566857814] [2024-10-17 21:47:51,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:51,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:47:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:52,127 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:52,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:47:52,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566857814] [2024-10-17 21:47:52,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566857814] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 21:47:52,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142427393] [2024-10-17 21:47:52,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:52,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:47:52,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:47:52,131 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) [2024-10-17 21:47:52,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-17 21:47:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:52,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-17 21:47:52,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 21:47:52,587 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:52,587 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 21:47:52,799 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:52,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142427393] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 21:47:52,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 21:47:52,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 20 [2024-10-17 21:47:52,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859503007] [2024-10-17 21:47:52,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 21:47:52,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-17 21:47:52,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:47:52,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-17 21:47:52,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2024-10-17 21:47:52,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:52,801 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:47:52,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 21:47:52,801 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:52,801 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:53,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:53,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-17 21:47:53,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-17 21:47:53,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-17 21:47:53,635 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 21:47:53,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:53,636 INFO L85 PathProgramCache]: Analyzing trace with hash -179045083, now seen corresponding path program 1 times [2024-10-17 21:47:53,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:47:53,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187730442] [2024-10-17 21:47:53,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:53,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:47:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 21:47:53,651 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-17 21:47:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 21:47:53,685 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-17 21:47:53,688 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-17 21:47:53,689 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-10-17 21:47:53,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-17 21:47:53,694 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-17 21:47:53,694 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (3/3) [2024-10-17 21:47:53,694 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-17 21:47:53,694 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-17 21:47:53,718 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-17 21:47:53,720 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 21:47:53,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 21:47:53,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:47:53,722 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 21:47:53,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (16)] Waiting until timeout for monitored process [2024-10-17 21:47:53,763 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 21:47:53,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:53,764 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread1of3ForFork0 ======== [2024-10-17 21:47:53,764 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@16e436e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=RANDOM, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=20, mConComCheckerRandomSeed=213, mConComCheckerConditionCriterion=false [2024-10-17 21:47:53,764 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 21:47:54,129 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 21:47:54,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:54,129 INFO L85 PathProgramCache]: Analyzing trace with hash -818978387, now seen corresponding path program 1 times [2024-10-17 21:47:54,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:47:54,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420925804] [2024-10-17 21:47:54,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:54,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:47:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:54,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:47:54,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420925804] [2024-10-17 21:47:54,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420925804] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 21:47:54,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 21:47:54,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-17 21:47:54,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753821588] [2024-10-17 21:47:54,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 21:47:54,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-17 21:47:54,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:47:54,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-17 21:47:54,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-17 21:47:54,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:54,226 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:47:54,226 INFO L472 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) [2024-10-17 21:47:54,226 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:54,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:54,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-17 21:47:54,777 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 21:47:54,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:54,777 INFO L85 PathProgramCache]: Analyzing trace with hash -742948073, now seen corresponding path program 1 times [2024-10-17 21:47:54,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:47:54,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968118427] [2024-10-17 21:47:54,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:54,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:47:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:54,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:54,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:47:54,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968118427] [2024-10-17 21:47:54,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968118427] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 21:47:54,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465569010] [2024-10-17 21:47:54,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:54,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:47:54,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:47:54,922 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) [2024-10-17 21:47:54,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-17 21:47:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:55,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-17 21:47:55,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 21:47:55,189 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:55,189 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 21:47:55,321 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:55,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465569010] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 21:47:55,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 21:47:55,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2024-10-17 21:47:55,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880071535] [2024-10-17 21:47:55,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 21:47:55,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-17 21:47:55,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:47:55,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-17 21:47:55,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-10-17 21:47:55,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:55,323 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:47:55,323 INFO L472 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) [2024-10-17 21:47:55,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:55,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:55,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:55,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-17 21:47:55,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-17 21:47:55,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:47:55,960 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 21:47:55,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:55,961 INFO L85 PathProgramCache]: Analyzing trace with hash 751576998, now seen corresponding path program 1 times [2024-10-17 21:47:55,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:47:55,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127039171] [2024-10-17 21:47:55,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:55,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:47:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:56,229 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:56,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:47:56,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127039171] [2024-10-17 21:47:56,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127039171] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 21:47:56,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891637302] [2024-10-17 21:47:56,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:56,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:47:56,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:47:56,231 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 21:47:56,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-17 21:47:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:56,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-17 21:47:56,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 21:47:56,770 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:56,770 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 21:47:57,097 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:57,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891637302] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 21:47:57,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 21:47:57,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 27 [2024-10-17 21:47:57,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183607017] [2024-10-17 21:47:57,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 21:47:57,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-17 21:47:57,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:47:57,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-17 21:47:57,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2024-10-17 21:47:57,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:57,099 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:47:57,099 INFO L472 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) [2024-10-17 21:47:57,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:57,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-10-17 21:47:57,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:57,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:57,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-17 21:47:57,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-17 21:47:57,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-17 21:47:58,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:47:58,137 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 21:47:58,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:47:58,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1068625670, now seen corresponding path program 2 times [2024-10-17 21:47:58,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:47:58,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706683517] [2024-10-17 21:47:58,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:47:58,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:47:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:47:58,494 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 134 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:58,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:47:58,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706683517] [2024-10-17 21:47:58,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706683517] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 21:47:58,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682597801] [2024-10-17 21:47:58,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-17 21:47:58,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:47:58,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:47:58,497 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) [2024-10-17 21:47:58,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-17 21:47:58,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-17 21:47:58,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 21:47:58,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-17 21:47:58,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 21:47:59,099 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 115 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:59,099 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 21:47:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 152 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:47:59,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682597801] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 21:47:59,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 21:47:59,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 41 [2024-10-17 21:47:59,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724428128] [2024-10-17 21:47:59,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 21:47:59,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-17 21:47:59,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:47:59,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-17 21:47:59,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=1202, Unknown=0, NotChecked=0, Total=1640 [2024-10-17 21:47:59,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:47:59,613 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:47:59,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.609756097560975) internal successors, (189), 41 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 21:47:59,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:47:59,614 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-10-17 21:47:59,614 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2024-10-17 21:47:59,614 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:06,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:48:06,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-17 21:48:06,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-17 21:48:06,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-17 21:48:06,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-17 21:48:06,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-17 21:48:06,603 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 21:48:06,951 INFO L85 PathProgramCache]: Analyzing trace with hash -863960967, now seen corresponding path program 1 times [2024-10-17 21:48:06,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:48:06,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:48:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:48:06,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:48:06,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:48:06,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:48:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:48:07,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:48:07,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 21:48:07,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 21:48:07,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 21:48:07,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:07,005 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:48:07,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-10-17 21:48:07,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:48:07,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2024-10-17 21:48:07,006 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2024-10-17 21:48:07,006 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2024-10-17 21:48:07,006 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:07,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:48:07,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-17 21:48:07,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-17 21:48:07,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-17 21:48:07,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 21:48:07,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,SelfDestructingSolverStorable22 [2024-10-17 21:48:07,720 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 21:48:07,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:48:07,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1288946434, now seen corresponding path program 1 times [2024-10-17 21:48:07,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:48:07,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637939492] [2024-10-17 21:48:07,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:48:07,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:48:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:48:07,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:48:07,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:48:07,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637939492] [2024-10-17 21:48:07,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637939492] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 21:48:07,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550670138] [2024-10-17 21:48:07,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:48:07,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:48:07,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:48:07,995 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) [2024-10-17 21:48:07,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-17 21:48:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:48:08,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-17 21:48:08,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 21:48:08,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:48:08,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 21:48:08,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:48:08,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550670138] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 21:48:08,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 21:48:08,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-10-17 21:48:08,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018061250] [2024-10-17 21:48:08,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 21:48:08,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-17 21:48:08,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:48:08,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-17 21:48:08,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-10-17 21:48:08,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:08,518 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:48:08,518 INFO L472 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) [2024-10-17 21:48:08,518 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:48:08,518 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2024-10-17 21:48:08,518 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2024-10-17 21:48:08,518 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2024-10-17 21:48:08,519 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 21:48:08,519 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:11,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:48:11,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-17 21:48:11,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-17 21:48:11,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-10-17 21:48:11,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 21:48:11,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-17 21:48:11,018 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-17 21:48:11,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-17 21:48:11,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:48:11,220 INFO L414 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-10-17 21:48:11,220 INFO L312 ceAbstractionStarter]: Result for error location thrThread1of3ForFork0 was SAFE (1/4) [2024-10-17 21:48:11,222 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 21:48:11,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 21:48:11,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:48:11,225 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 21:48:11,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (21)] Waiting until timeout for monitored process [2024-10-17 21:48:11,255 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 21:48:11,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:48:11,255 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-17 21:48:11,256 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@16e436e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=RANDOM, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=20, mConComCheckerRandomSeed=213, mConComCheckerConditionCriterion=false [2024-10-17 21:48:11,256 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 21:48:12,117 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 21:48:12,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:48:12,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1578086312, now seen corresponding path program 1 times [2024-10-17 21:48:12,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:48:12,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620674627] [2024-10-17 21:48:12,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:48:12,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:48:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:48:12,254 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-17 21:48:12,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:48:12,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620674627] [2024-10-17 21:48:12,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620674627] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 21:48:12,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 21:48:12,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-17 21:48:12,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598529729] [2024-10-17 21:48:12,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 21:48:12,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-17 21:48:12,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:48:12,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-17 21:48:12,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-17 21:48:12,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:12,257 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:48:12,257 INFO L472 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) [2024-10-17 21:48:12,257 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:12,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:48:12,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-17 21:48:12,422 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 21:48:12,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:48:12,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1903687417, now seen corresponding path program 1 times [2024-10-17 21:48:12,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:48:12,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545227355] [2024-10-17 21:48:12,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:48:12,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:48:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:48:12,580 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 21:48:12,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:48:12,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545227355] [2024-10-17 21:48:12,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545227355] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 21:48:12,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367763154] [2024-10-17 21:48:12,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:48:12,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:48:12,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:48:12,584 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 21:48:12,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-17 21:48:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:48:12,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-17 21:48:12,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 21:48:13,035 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 21:48:13,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 21:48:13,208 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 21:48:13,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367763154] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 21:48:13,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 21:48:13,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 19 [2024-10-17 21:48:13,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387114165] [2024-10-17 21:48:13,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 21:48:13,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-17 21:48:13,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:48:13,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-17 21:48:13,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-10-17 21:48:13,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:13,210 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:48:13,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 21:48:13,211 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:48:13,211 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:13,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:48:13,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 21:48:13,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-10-17 21:48:13,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-17 21:48:13,744 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 21:48:13,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:48:13,745 INFO L85 PathProgramCache]: Analyzing trace with hash 817728167, now seen corresponding path program 1 times [2024-10-17 21:48:13,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:48:13,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195857114] [2024-10-17 21:48:13,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:48:13,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:48:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:48:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:48:14,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:48:14,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195857114] [2024-10-17 21:48:14,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195857114] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 21:48:14,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214943670] [2024-10-17 21:48:14,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:48:14,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:48:14,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:48:14,062 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 21:48:14,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-17 21:48:14,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:48:14,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-17 21:48:14,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 21:48:14,354 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 21:48:14,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 21:48:14,606 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:48:14,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214943670] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 21:48:14,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 21:48:14,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 8] total 22 [2024-10-17 21:48:14,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461592276] [2024-10-17 21:48:14,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 21:48:14,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-17 21:48:14,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:48:14,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-17 21:48:14,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2024-10-17 21:48:14,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:14,608 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:48:14,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 22 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) [2024-10-17 21:48:14,608 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:48:14,608 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-10-17 21:48:14,609 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:15,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:48:15,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 21:48:15,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-17 21:48:15,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-10-17 21:48:15,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-17 21:48:15,477 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 21:48:15,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:48:15,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1152076400, now seen corresponding path program 1 times [2024-10-17 21:48:15,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:48:15,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607220198] [2024-10-17 21:48:15,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:48:15,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:48:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:48:15,911 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:48:15,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:48:15,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607220198] [2024-10-17 21:48:15,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607220198] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 21:48:15,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107959509] [2024-10-17 21:48:15,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:48:15,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:48:15,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:48:15,913 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) [2024-10-17 21:48:15,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-17 21:48:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:48:16,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-17 21:48:16,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 21:48:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:48:17,669 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 21:48:18,242 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 21:48:18,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107959509] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 21:48:18,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 21:48:18,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 12] total 35 [2024-10-17 21:48:18,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700488885] [2024-10-17 21:48:18,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 21:48:18,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-17 21:48:18,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:48:18,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-17 21:48:18,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=999, Unknown=0, NotChecked=0, Total=1190 [2024-10-17 21:48:18,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:18,244 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:48:18,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.5428571428571427) internal successors, (124), 35 states have internal predecessors, (124), 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) [2024-10-17 21:48:18,244 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:48:18,244 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-10-17 21:48:18,244 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2024-10-17 21:48:18,244 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:20,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:48:20,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 21:48:20,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-17 21:48:20,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-17 21:48:20,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-10-17 21:48:21,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-17 21:48:21,163 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 21:48:21,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:48:21,164 INFO L85 PathProgramCache]: Analyzing trace with hash 2096838383, now seen corresponding path program 1 times [2024-10-17 21:48:21,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:48:21,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695378240] [2024-10-17 21:48:21,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:48:21,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:48:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:48:21,768 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:48:21,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:48:21,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695378240] [2024-10-17 21:48:21,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695378240] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 21:48:21,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645033388] [2024-10-17 21:48:21,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:48:21,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:48:21,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:48:21,771 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) [2024-10-17 21:48:21,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-17 21:48:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:48:21,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-17 21:48:21,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 21:48:23,114 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:48:23,114 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 21:48:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:48:23,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645033388] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 21:48:23,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 21:48:23,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 35 [2024-10-17 21:48:23,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007248549] [2024-10-17 21:48:23,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 21:48:23,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-17 21:48:23,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:48:23,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-17 21:48:23,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1013, Unknown=0, NotChecked=0, Total=1190 [2024-10-17 21:48:23,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:23,684 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:48:23,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.657142857142857) internal successors, (128), 35 states have internal predecessors, (128), 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) [2024-10-17 21:48:23,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:48:23,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-10-17 21:48:23,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2024-10-17 21:48:23,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2024-10-17 21:48:23,684 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:25,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:48:25,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 21:48:25,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-17 21:48:25,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-17 21:48:25,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-17 21:48:25,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-10-17 21:48:25,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,25 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:48:25,531 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 21:48:25,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:48:25,532 INFO L85 PathProgramCache]: Analyzing trace with hash 2096870096, now seen corresponding path program 1 times [2024-10-17 21:48:25,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:48:25,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701815943] [2024-10-17 21:48:25,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:48:25,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:48:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 21:48:25,549 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-17 21:48:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 21:48:25,575 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-17 21:48:25,576 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-17 21:48:25,576 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-10-17 21:48:25,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-17 21:48:25,578 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-10-17 21:48:25,578 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (2/4) [2024-10-17 21:48:25,578 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-17 21:48:25,578 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-17 21:48:25,600 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-17 21:48:25,602 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 21:48:25,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 21:48:25,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:48:25,606 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) [2024-10-17 21:48:25,608 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 [2024-10-17 21:48:25,644 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 21:48:25,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:48:25,645 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread1of4ForFork0 ======== [2024-10-17 21:48:25,645 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@16e436e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=RANDOM, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=20, mConComCheckerRandomSeed=213, mConComCheckerConditionCriterion=false [2024-10-17 21:48:25,645 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 21:48:26,288 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 21:48:26,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:48:26,288 INFO L85 PathProgramCache]: Analyzing trace with hash -379130975, now seen corresponding path program 1 times [2024-10-17 21:48:26,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:48:26,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051920436] [2024-10-17 21:48:26,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:48:26,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:48:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:48:26,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:48:26,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:48:26,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051920436] [2024-10-17 21:48:26,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051920436] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 21:48:26,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 21:48:26,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-17 21:48:26,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201627214] [2024-10-17 21:48:26,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 21:48:26,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-17 21:48:26,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:48:26,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-17 21:48:26,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-17 21:48:26,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:26,381 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:48:26,381 INFO L472 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) [2024-10-17 21:48:26,381 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:26,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:48:26,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-10-17 21:48:26,974 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 21:48:26,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:48:26,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1577773233, now seen corresponding path program 1 times [2024-10-17 21:48:26,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:48:26,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639233248] [2024-10-17 21:48:26,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:48:26,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:48:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:48:27,101 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:48:27,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:48:27,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639233248] [2024-10-17 21:48:27,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639233248] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 21:48:27,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079629056] [2024-10-17 21:48:27,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:48:27,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:48:27,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:48:27,105 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) [2024-10-17 21:48:27,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-17 21:48:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:48:27,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-17 21:48:27,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 21:48:27,437 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:48:27,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 21:48:27,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:48:27,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079629056] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 21:48:27,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 21:48:27,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2024-10-17 21:48:27,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310546219] [2024-10-17 21:48:27,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 21:48:27,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-17 21:48:27,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:48:27,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-17 21:48:27,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-10-17 21:48:27,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:27,575 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:48:27,575 INFO L472 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) [2024-10-17 21:48:27,576 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:48:27,576 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:28,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:48:28,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-17 21:48:28,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-10-17 21:48:28,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,27 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:48:28,497 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 21:48:28,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:48:28,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2069174105, now seen corresponding path program 1 times [2024-10-17 21:48:28,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:48:28,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507891449] [2024-10-17 21:48:28,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:48:28,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:48:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:48:28,787 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:48:28,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:48:28,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507891449] [2024-10-17 21:48:28,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507891449] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 21:48:28,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106561332] [2024-10-17 21:48:28,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:48:28,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:48:28,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:48:28,790 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) [2024-10-17 21:48:28,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-17 21:48:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:48:28,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-17 21:48:28,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 21:48:30,031 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 22 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:48:30,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 21:48:30,645 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 36 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:48:30,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106561332] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 21:48:30,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 21:48:30,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 11] total 31 [2024-10-17 21:48:30,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723014561] [2024-10-17 21:48:30,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 21:48:30,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-17 21:48:30,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:48:30,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-17 21:48:30,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=785, Unknown=0, NotChecked=0, Total=930 [2024-10-17 21:48:30,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:30,647 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:48:30,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.483870967741935) internal successors, (170), 31 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 21:48:30,647 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:48:30,647 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-10-17 21:48:30,647 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:33,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:48:33,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-17 21:48:33,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-10-17 21:48:33,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-10-17 21:48:33,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,28 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:48:33,225 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 21:48:33,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:48:33,226 INFO L85 PathProgramCache]: Analyzing trace with hash 469099190, now seen corresponding path program 1 times [2024-10-17 21:48:33,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:48:33,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836930859] [2024-10-17 21:48:33,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:48:33,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:48:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:48:33,629 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:48:33,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:48:33,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836930859] [2024-10-17 21:48:33,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836930859] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 21:48:33,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237285313] [2024-10-17 21:48:33,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:48:33,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:48:33,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:48:33,632 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) [2024-10-17 21:48:33,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-10-17 21:48:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:48:33,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-17 21:48:33,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 21:48:34,119 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 68 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-17 21:48:34,119 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 21:48:34,402 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 67 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-17 21:48:34,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237285313] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 21:48:34,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 21:48:34,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 29 [2024-10-17 21:48:34,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515820980] [2024-10-17 21:48:34,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 21:48:34,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-17 21:48:34,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:48:34,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-17 21:48:34,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2024-10-17 21:48:34,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:34,404 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:48:34,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.620689655172414) internal successors, (163), 29 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 21:48:34,404 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:48:34,404 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-10-17 21:48:34,404 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 56 states. [2024-10-17 21:48:34,404 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:36,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:48:36,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-17 21:48:36,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-10-17 21:48:36,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-10-17 21:48:36,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-10-17 21:48:37,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:48:37,066 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 21:48:37,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:48:37,067 INFO L85 PathProgramCache]: Analyzing trace with hash 583310295, now seen corresponding path program 2 times [2024-10-17 21:48:37,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:48:37,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106071284] [2024-10-17 21:48:37,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:48:37,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:48:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:48:37,509 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:48:37,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:48:37,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106071284] [2024-10-17 21:48:37,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106071284] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 21:48:37,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792204990] [2024-10-17 21:48:37,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-17 21:48:37,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:48:37,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:48:37,510 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) [2024-10-17 21:48:37,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-10-17 21:48:37,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-17 21:48:37,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 21:48:37,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-17 21:48:37,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 21:48:38,256 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 8 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:48:38,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 21:48:38,856 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 8 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:48:38,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792204990] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 21:48:38,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 21:48:38,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 39 [2024-10-17 21:48:38,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227670600] [2024-10-17 21:48:38,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 21:48:38,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-17 21:48:38,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:48:38,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-17 21:48:38,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1132, Unknown=0, NotChecked=0, Total=1482 [2024-10-17 21:48:38,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:38,858 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:48:38,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 6.230769230769231) internal successors, (243), 39 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 21:48:38,859 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:48:38,859 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-10-17 21:48:38,859 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2024-10-17 21:48:38,859 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 63 states. [2024-10-17 21:48:38,859 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:40,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:48:40,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-17 21:48:40,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-10-17 21:48:40,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-10-17 21:48:40,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-17 21:48:40,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-10-17 21:48:41,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,30 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:48:41,073 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 21:48:41,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 21:48:41,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1163846607, now seen corresponding path program 3 times [2024-10-17 21:48:41,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 21:48:41,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67189402] [2024-10-17 21:48:41,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 21:48:41,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 21:48:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 21:48:41,769 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 515 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 21:48:41,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 21:48:41,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67189402] [2024-10-17 21:48:41,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67189402] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 21:48:41,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162389355] [2024-10-17 21:48:41,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-17 21:48:41,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 21:48:41,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 21:48:41,771 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) [2024-10-17 21:48:41,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-10-17 21:48:41,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-17 21:48:41,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 21:48:41,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-17 21:48:41,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 21:48:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 60 proven. 18 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-10-17 21:48:42,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 21:48:42,894 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 8 proven. 70 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-10-17 21:48:42,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162389355] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 21:48:42,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 21:48:42,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 8, 7] total 35 [2024-10-17 21:48:42,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237509260] [2024-10-17 21:48:42,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 21:48:42,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-17 21:48:42,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 21:48:42,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-17 21:48:42,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=902, Unknown=0, NotChecked=0, Total=1190 [2024-10-17 21:48:42,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 21:48:42,898 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 21:48:42,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 6.142857142857143) internal successors, (215), 35 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 21:48:42,899 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 21:48:42,899 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-10-17 21:48:42,899 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2024-10-17 21:48:42,899 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 75 states. [2024-10-17 21:48:42,900 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 47 states. [2024-10-17 21:48:42,900 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.