./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 IA --traceabstraction.criterion.for.conditional.commutativity.checking SLEEP_SET -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 IA --traceabstraction.criterion.for.conditional.commutativity.checking SLEEP_SET -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 [2024-10-18 12:21:01,769 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-18 12:21:01,823 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-10-18 12:21:01,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-18 12:21:01,830 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-18 12:21:01,854 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-18 12:21:01,855 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-18 12:21:01,855 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-18 12:21:01,856 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-18 12:21:01,857 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-18 12:21:01,857 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-18 12:21:01,858 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-18 12:21:01,858 INFO L153 SettingsManager]: * Use SBE=true [2024-10-18 12:21:01,858 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-18 12:21:01,859 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-18 12:21:01,860 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-18 12:21:01,860 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-18 12:21:01,860 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-18 12:21:01,860 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-18 12:21:01,861 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-18 12:21:01,863 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-18 12:21:01,864 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-18 12:21:01,864 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-18 12:21:01,864 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-18 12:21:01,864 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-18 12:21:01,865 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-18 12:21:01,865 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-18 12:21:01,865 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-18 12:21:01,865 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-18 12:21:01,865 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-18 12:21:01,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-18 12:21:01,866 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-18 12:21:01,866 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-18 12:21:01,866 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-10-18 12:21:01,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-18 12:21:01,867 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-18 12:21:01,867 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-10-18 12:21:01,867 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-18 12:21:01,867 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-18 12:21:01,867 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-10-18 12:21:01,867 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-10-18 12:21:01,869 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94001a9ab0492f7774a7e81f183179cf0060947b701e48f51b2989eec22ae051 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: DFS Order used in POR -> LOOP_LOCKSTEP Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional conditional commutativity checking -> IA Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Criterion for conditional commutativity checking -> SLEEP_SET [2024-10-18 12:21:02,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-18 12:21:02,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-18 12:21:02,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-18 12:21:02,086 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-18 12:21:02,087 INFO L274 PluginConnector]: CDTParser initialized [2024-10-18 12:21:02,088 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread-lit/sssc12-pthread.i [2024-10-18 12:21:03,444 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-18 12:21:03,664 INFO L384 CDTParser]: Found 1 translation units. [2024-10-18 12:21:03,664 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/sssc12-pthread.i [2024-10-18 12:21:03,681 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/32c294937/14b861009bec4ef4b58f73114b1ef778/FLAG13c6b0245 [2024-10-18 12:21:03,705 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/32c294937/14b861009bec4ef4b58f73114b1ef778 [2024-10-18 12:21:03,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-18 12:21:03,709 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-18 12:21:03,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-18 12:21:03,714 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-18 12:21:03,719 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-18 12:21:03,723 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.10 12:21:03" (1/1) ... [2024-10-18 12:21:03,727 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34af7769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 12:21:03, skipping insertion in model container [2024-10-18 12:21:03,727 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.10 12:21:03" (1/1) ... [2024-10-18 12:21:03,788 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-18 12:21:04,253 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] [2024-10-18 12:21:04,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-18 12:21:04,286 INFO L200 MainTranslator]: Completed pre-run [2024-10-18 12:21:04,329 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] [2024-10-18 12:21:04,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-18 12:21:04,477 INFO L204 MainTranslator]: Completed translation [2024-10-18 12:21:04,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 12:21:04 WrapperNode [2024-10-18 12:21:04,478 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-18 12:21:04,479 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-18 12:21:04,479 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-18 12:21:04,480 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-18 12:21:04,521 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 12:21:04" (1/1) ... [2024-10-18 12:21:04,543 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 12:21:04" (1/1) ... [2024-10-18 12:21:04,570 INFO L138 Inliner]: procedures = 272, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2024-10-18 12:21:04,572 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-18 12:21:04,573 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-18 12:21:04,573 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-18 12:21:04,573 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-18 12:21:04,583 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 12:21:04" (1/1) ... [2024-10-18 12:21:04,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 12:21:04" (1/1) ... [2024-10-18 12:21:04,587 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 12:21:04" (1/1) ... [2024-10-18 12:21:04,591 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 12:21:04" (1/1) ... [2024-10-18 12:21:04,601 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 12:21:04" (1/1) ... [2024-10-18 12:21:04,604 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 12:21:04" (1/1) ... [2024-10-18 12:21:04,606 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 12:21:04" (1/1) ... [2024-10-18 12:21:04,607 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 12:21:04" (1/1) ... [2024-10-18 12:21:04,610 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-18 12:21:04,611 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-18 12:21:04,611 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-18 12:21:04,611 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-18 12:21:04,614 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 12:21:04" (1/1) ... [2024-10-18 12:21:04,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-18 12:21:04,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:21:04,657 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) [2024-10-18 12:21:04,672 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 [2024-10-18 12:21:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2024-10-18 12:21:04,723 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2024-10-18 12:21:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-18 12:21:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-18 12:21:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-18 12:21:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-18 12:21:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-18 12:21:04,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-18 12:21:04,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-18 12:21:04,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-18 12:21:04,729 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-18 12:21:04,842 INFO L238 CfgBuilder]: Building ICFG [2024-10-18 12:21:04,844 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-18 12:21:04,960 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-18 12:21:04,960 INFO L287 CfgBuilder]: Performing block encoding [2024-10-18 12:21:05,105 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-18 12:21:05,105 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-18 12:21:05,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.10 12:21:05 BoogieIcfgContainer [2024-10-18 12:21:05,106 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-18 12:21:05,108 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-18 12:21:05,109 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-18 12:21:05,112 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-18 12:21:05,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.10 12:21:03" (1/3) ... [2024-10-18 12:21:05,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd3429d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.10 12:21:05, skipping insertion in model container [2024-10-18 12:21:05,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 12:21:04" (2/3) ... [2024-10-18 12:21:05,114 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd3429d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.10 12:21:05, skipping insertion in model container [2024-10-18 12:21:05,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.10 12:21:05" (3/3) ... [2024-10-18 12:21:05,116 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12-pthread.i [2024-10-18 12:21:05,129 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-18 12:21:05,130 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-18 12:21:05,130 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-18 12:21:05,163 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-18 12:21:05,216 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-18 12:21:05,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-18 12:21:05,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:21:05,219 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) [2024-10-18 12:21:05,220 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 [2024-10-18 12:21:05,293 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-18 12:21:05,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:05,308 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-18 12:21:05,315 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;@65dffe31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=IA, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-18 12:21:05,316 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-18 12:21:05,876 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-18 12:21:05,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:05,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1616345057, now seen corresponding path program 1 times [2024-10-18 12:21:05,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:21:05,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687390453] [2024-10-18 12:21:05,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:05,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:21:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:06,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:06,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:21:06,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687390453] [2024-10-18 12:21:06,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687390453] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-18 12:21:06,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-18 12:21:06,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-18 12:21:06,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564634850] [2024-10-18 12:21:06,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-18 12:21:06,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-18 12:21:06,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:21:06,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-18 12:21:06,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-18 12:21:06,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:06,575 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:21:06,576 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) [2024-10-18 12:21:06,576 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:06,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-18 12:21:06,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-18 12:21:06,758 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-18 12:21:06,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:06,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1616376770, now seen corresponding path program 1 times [2024-10-18 12:21:06,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:21:06,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718564410] [2024-10-18 12:21:06,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:06,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:21:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-18 12:21:06,782 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-18 12:21:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-18 12:21:06,816 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-18 12:21:06,816 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-18 12:21:06,818 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-10-18 12:21:06,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-18 12:21:06,827 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-18 12:21:06,829 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (1/2) [2024-10-18 12:21:06,830 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-18 12:21:06,830 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-18 12:21:06,845 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-18 12:21:06,847 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-18 12:21:06,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-18 12:21:06,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:21:06,857 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) [2024-10-18 12:21:06,858 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 [2024-10-18 12:21:06,891 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-18 12:21:06,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:06,893 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread2of2ForFork0 ======== [2024-10-18 12:21:06,894 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;@65dffe31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=IA, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-18 12:21:06,894 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-18 12:21:07,526 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 12:21:07,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:07,528 INFO L85 PathProgramCache]: Analyzing trace with hash -2138984618, now seen corresponding path program 1 times [2024-10-18 12:21:07,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:21:07,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046455445] [2024-10-18 12:21:07,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:07,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:21:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:07,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:07,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:21:07,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046455445] [2024-10-18 12:21:07,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046455445] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-18 12:21:07,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-18 12:21:07,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-18 12:21:07,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59471405] [2024-10-18 12:21:07,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-18 12:21:07,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-18 12:21:07,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:21:07,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-18 12:21:07,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-18 12:21:07,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:07,807 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:21:07,808 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) [2024-10-18 12:21:07,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:08,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:08,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-18 12:21:08,031 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 12:21:08,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:08,032 INFO L85 PathProgramCache]: Analyzing trace with hash 503857917, now seen corresponding path program 1 times [2024-10-18 12:21:08,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:21:08,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698382234] [2024-10-18 12:21:08,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:08,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:21:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:08,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:08,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:21:08,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698382234] [2024-10-18 12:21:08,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698382234] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 12:21:08,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686162011] [2024-10-18 12:21:08,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:08,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:21:08,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:21:08,217 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) [2024-10-18 12:21:08,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-18 12:21:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:08,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-18 12:21:08,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 12:21:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:08,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 12:21:09,360 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:09,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686162011] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-18 12:21:09,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-18 12:21:09,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 10] total 24 [2024-10-18 12:21:09,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094273823] [2024-10-18 12:21:09,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-18 12:21:09,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-18 12:21:09,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:21:09,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-18 12:21:09,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2024-10-18 12:21:09,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:09,371 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:21:09,371 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) [2024-10-18 12:21:09,372 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:09,372 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:10,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:10,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-18 12:21:10,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-18 12:21:10,770 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 [2024-10-18 12:21:10,771 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 12:21:10,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:10,772 INFO L85 PathProgramCache]: Analyzing trace with hash 797891780, now seen corresponding path program 1 times [2024-10-18 12:21:10,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:21:10,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877583922] [2024-10-18 12:21:10,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:10,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:21:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:11,004 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-18 12:21:11,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:21:11,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877583922] [2024-10-18 12:21:11,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877583922] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 12:21:11,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938982766] [2024-10-18 12:21:11,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:11,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:21:11,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:21:11,008 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) [2024-10-18 12:21:11,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-18 12:21:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:11,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-18 12:21:11,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 12:21:11,296 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-18 12:21:11,296 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 12:21:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-18 12:21:11,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938982766] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-18 12:21:11,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-18 12:21:11,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 22 [2024-10-18 12:21:11,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343330962] [2024-10-18 12:21:11,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-18 12:21:11,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-18 12:21:11,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:21:11,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-18 12:21:11,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-10-18 12:21:11,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:11,521 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:21:11,521 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) [2024-10-18 12:21:11,521 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:11,522 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2024-10-18 12:21:11,522 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:12,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:12,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-18 12:21:12,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-10-18 12:21:12,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-18 12:21:12,874 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 [2024-10-18 12:21:12,875 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 12:21:12,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:12,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1472871341, now seen corresponding path program 2 times [2024-10-18 12:21:12,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:21:12,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905897343] [2024-10-18 12:21:12,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:12,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:21:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-18 12:21:13,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:21:13,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905897343] [2024-10-18 12:21:13,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905897343] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 12:21:13,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910544709] [2024-10-18 12:21:13,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-18 12:21:13,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:21:13,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:21:13,147 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) [2024-10-18 12:21:13,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-18 12:21:13,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-18 12:21:13,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-18 12:21:13,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-18 12:21:13,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 12:21:13,570 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 13 proven. 64 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-18 12:21:13,571 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 12:21:13,932 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 13 proven. 64 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-18 12:21:13,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910544709] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-18 12:21:13,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-18 12:21:13,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 31 [2024-10-18 12:21:13,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164268096] [2024-10-18 12:21:13,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-18 12:21:13,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-18 12:21:13,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:21:13,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-18 12:21:13,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2024-10-18 12:21:13,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:13,941 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:21:13,941 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) [2024-10-18 12:21:13,941 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:13,942 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2024-10-18 12:21:13,942 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2024-10-18 12:21:13,942 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:15,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:15,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-18 12:21:15,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-10-18 12:21:15,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-10-18 12:21:15,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-18 12:21:15,994 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 [2024-10-18 12:21:15,995 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 12:21:15,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:15,996 INFO L85 PathProgramCache]: Analyzing trace with hash -179813764, now seen corresponding path program 3 times [2024-10-18 12:21:15,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:21:15,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193754855] [2024-10-18 12:21:15,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:15,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:21:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 105 proven. 42 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-10-18 12:21:16,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:21:16,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193754855] [2024-10-18 12:21:16,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193754855] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 12:21:16,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443003525] [2024-10-18 12:21:16,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-18 12:21:16,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:21:16,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:21:16,455 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) [2024-10-18 12:21:16,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-18 12:21:16,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-18 12:21:16,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-18 12:21:16,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-18 12:21:16,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 12:21:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 122 proven. 25 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-10-18 12:21:17,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 12:21:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 127 proven. 31 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-10-18 12:21:18,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443003525] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-18 12:21:18,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-18 12:21:18,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 15] total 36 [2024-10-18 12:21:18,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782588803] [2024-10-18 12:21:18,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-18 12:21:18,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-18 12:21:18,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:21:18,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-18 12:21:18,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1020, Unknown=0, NotChecked=0, Total=1260 [2024-10-18 12:21:18,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:18,460 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:21:18,460 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) [2024-10-18 12:21:18,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:18,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2024-10-18 12:21:18,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2024-10-18 12:21:18,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2024-10-18 12:21:18,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:24,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:24,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-18 12:21:24,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-10-18 12:21:24,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2024-10-18 12:21:24,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-18 12:21:24,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-18 12:21:24,578 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 [2024-10-18 12:21:24,579 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 12:21:24,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:24,580 INFO L85 PathProgramCache]: Analyzing trace with hash 876964903, now seen corresponding path program 1 times [2024-10-18 12:21:24,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:21:24,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339292395] [2024-10-18 12:21:24,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:24,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:21:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:25,275 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 265 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:25,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:21:25,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339292395] [2024-10-18 12:21:25,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339292395] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 12:21:25,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127466855] [2024-10-18 12:21:25,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:25,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:21:25,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:21:25,280 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) [2024-10-18 12:21:25,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-18 12:21:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:25,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-18 12:21:25,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 12:21:25,605 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 261 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-18 12:21:25,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 12:21:25,739 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 313 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-18 12:21:25,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127466855] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-18 12:21:25,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-18 12:21:25,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [23, 14] total 30 [2024-10-18 12:21:25,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148575573] [2024-10-18 12:21:25,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-18 12:21:25,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-18 12:21:25,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:21:25,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-18 12:21:25,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=583, Unknown=0, NotChecked=0, Total=870 [2024-10-18 12:21:25,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:25,751 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:21:25,752 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) [2024-10-18 12:21:25,752 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:25,752 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2024-10-18 12:21:25,752 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 60 states. [2024-10-18 12:21:25,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 162 states. [2024-10-18 12:21:25,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 38 states. [2024-10-18 12:21:25,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-10-18 12:21:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2024-10-18 12:21:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 308 states. [2024-10-18 12:21:42,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-10-18 12:21:42,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-18 12:21:42,297 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-18 12:21:42,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-18 12:21:42,501 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 [2024-10-18 12:21:42,506 INFO L414 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2024-10-18 12:21:42,506 INFO L312 ceAbstractionStarter]: Result for error location thrThread2of2ForFork0 was SAFE (1/3) [2024-10-18 12:21:42,510 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-18 12:21:42,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-18 12:21:42,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:21:42,512 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) [2024-10-18 12:21:42,513 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 [2024-10-18 12:21:42,544 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-18 12:21:42,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:42,546 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread1of2ForFork0 ======== [2024-10-18 12:21:42,547 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;@65dffe31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=IA, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-18 12:21:42,547 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-18 12:21:42,803 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 12:21:42,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:42,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1276656721, now seen corresponding path program 1 times [2024-10-18 12:21:42,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:21:42,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018259028] [2024-10-18 12:21:42,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:42,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:21:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:42,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:42,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:21:42,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018259028] [2024-10-18 12:21:42,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018259028] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-18 12:21:42,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-18 12:21:42,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-18 12:21:42,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389039889] [2024-10-18 12:21:42,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-18 12:21:42,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-18 12:21:42,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:21:42,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-18 12:21:42,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-18 12:21:42,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:42,888 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:21:42,888 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) [2024-10-18 12:21:42,888 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:43,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:43,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-18 12:21:43,127 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 12:21:43,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:43,127 INFO L85 PathProgramCache]: Analyzing trace with hash 2120757025, now seen corresponding path program 1 times [2024-10-18 12:21:43,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:21:43,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831318238] [2024-10-18 12:21:43,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:43,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:21:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:43,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:43,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:21:43,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831318238] [2024-10-18 12:21:43,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831318238] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 12:21:43,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509608068] [2024-10-18 12:21:43,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:43,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:21:43,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:21:43,319 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) [2024-10-18 12:21:43,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-18 12:21:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:43,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-18 12:21:43,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 12:21:43,580 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:43,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 12:21:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:43,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509608068] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-18 12:21:43,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-18 12:21:43,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2024-10-18 12:21:43,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975746975] [2024-10-18 12:21:43,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-18 12:21:43,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-18 12:21:43,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:21:43,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-18 12:21:43,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-10-18 12:21:43,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:43,725 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:21:43,726 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) [2024-10-18 12:21:43,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:43,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:43,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:43,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-18 12:21:44,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-18 12:21:44,199 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 [2024-10-18 12:21:44,201 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 12:21:44,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:44,202 INFO L85 PathProgramCache]: Analyzing trace with hash 410981222, now seen corresponding path program 1 times [2024-10-18 12:21:44,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:21:44,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514216218] [2024-10-18 12:21:44,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:44,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:21:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:44,388 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:44,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:21:44,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514216218] [2024-10-18 12:21:44,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514216218] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 12:21:44,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817936650] [2024-10-18 12:21:44,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:44,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:21:44,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:21:44,392 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) [2024-10-18 12:21:44,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-18 12:21:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:44,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-18 12:21:44,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 12:21:44,750 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:44,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 12:21:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:45,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817936650] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-18 12:21:45,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-18 12:21:45,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 27 [2024-10-18 12:21:45,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51012044] [2024-10-18 12:21:45,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-18 12:21:45,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-18 12:21:45,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:21:45,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-18 12:21:45,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2024-10-18 12:21:45,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:45,036 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:21:45,037 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) [2024-10-18 12:21:45,037 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:45,037 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-10-18 12:21:45,037 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:45,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:45,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-18 12:21:45,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-18 12:21:45,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-18 12:21:45,997 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 [2024-10-18 12:21:45,998 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 12:21:45,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:45,999 INFO L85 PathProgramCache]: Analyzing trace with hash -181206010, now seen corresponding path program 2 times [2024-10-18 12:21:45,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:21:45,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583029155] [2024-10-18 12:21:45,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:45,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:21:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:46,252 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 129 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:46,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:21:46,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583029155] [2024-10-18 12:21:46,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583029155] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 12:21:46,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607954312] [2024-10-18 12:21:46,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-18 12:21:46,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:21:46,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:21:46,255 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) [2024-10-18 12:21:46,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-18 12:21:46,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-18 12:21:46,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-18 12:21:46,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-18 12:21:46,343 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 12:21:46,756 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 108 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:46,756 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 12:21:47,242 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 144 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:47,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607954312] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-18 12:21:47,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-18 12:21:47,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 41 [2024-10-18 12:21:47,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178234443] [2024-10-18 12:21:47,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-18 12:21:47,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-18 12:21:47,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:21:47,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-18 12:21:47,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=1202, Unknown=0, NotChecked=0, Total=1640 [2024-10-18 12:21:47,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:47,248 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:21:47,248 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) [2024-10-18 12:21:47,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:47,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-10-18 12:21:47,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2024-10-18 12:21:47,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:50,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:50,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-18 12:21:50,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-18 12:21:50,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-18 12:21:50,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-18 12:21:50,220 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 [2024-10-18 12:21:50,221 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 12:21:50,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:50,221 INFO L85 PathProgramCache]: Analyzing trace with hash 218728394, now seen corresponding path program 1 times [2024-10-18 12:21:50,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:21:50,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82214704] [2024-10-18 12:21:50,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:50,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:21:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:50,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:50,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:21:50,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82214704] [2024-10-18 12:21:50,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82214704] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-18 12:21:50,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-18 12:21:50,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-18 12:21:50,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386447949] [2024-10-18 12:21:50,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-18 12:21:50,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-18 12:21:50,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:21:50,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-18 12:21:50,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-18 12:21:50,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:50,456 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:21:50,456 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) [2024-10-18 12:21:50,456 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:50,456 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2024-10-18 12:21:50,456 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2024-10-18 12:21:50,456 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2024-10-18 12:21:50,456 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:50,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:50,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-18 12:21:50,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-18 12:21:50,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-18 12:21:50,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-18 12:21:50,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-18 12:21:50,567 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 12:21:50,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:50,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1122258710, now seen corresponding path program 2 times [2024-10-18 12:21:50,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:21:50,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16538312] [2024-10-18 12:21:50,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:50,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:21:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:50,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:50,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:21:50,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16538312] [2024-10-18 12:21:50,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16538312] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 12:21:50,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705204572] [2024-10-18 12:21:50,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-18 12:21:50,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:21:50,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:21:50,728 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) [2024-10-18 12:21:50,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-18 12:21:50,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-18 12:21:50,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-18 12:21:50,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-18 12:21:50,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 12:21:51,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:51,059 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 12:21:51,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:51,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705204572] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-18 12:21:51,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-18 12:21:51,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-10-18 12:21:51,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244816405] [2024-10-18 12:21:51,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-18 12:21:51,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-18 12:21:51,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:21:51,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-18 12:21:51,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-10-18 12:21:51,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:51,237 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:21:51,237 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) [2024-10-18 12:21:51,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:51,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2024-10-18 12:21:51,238 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2024-10-18 12:21:51,238 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2024-10-18 12:21:51,238 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-18 12:21:51,238 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:51,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:51,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-18 12:21:51,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-18 12:21:51,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-10-18 12:21:51,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-18 12:21:51,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-18 12:21:51,891 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-18 12:21:51,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-18 12:21:52,092 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 [2024-10-18 12:21:52,095 INFO L414 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-10-18 12:21:52,096 INFO L312 ceAbstractionStarter]: Result for error location thrThread1of2ForFork0 was SAFE (2/3) [2024-10-18 12:21:52,107 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-18 12:21:52,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-18 12:21:52,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:21:52,111 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) [2024-10-18 12:21:52,114 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 [2024-10-18 12:21:52,150 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-18 12:21:52,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:52,151 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-18 12:21:52,151 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;@65dffe31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=IA, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-18 12:21:52,151 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-18 12:21:52,656 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-18 12:21:52,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:52,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1725124318, now seen corresponding path program 1 times [2024-10-18 12:21:52,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:21:52,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256055820] [2024-10-18 12:21:52,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:52,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:21:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:52,804 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-18 12:21:52,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:21:52,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256055820] [2024-10-18 12:21:52,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256055820] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-18 12:21:52,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-18 12:21:52,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-18 12:21:52,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450872945] [2024-10-18 12:21:52,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-18 12:21:52,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-18 12:21:52,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:21:52,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-18 12:21:52,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-18 12:21:52,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:52,806 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:21:52,806 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) [2024-10-18 12:21:52,806 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:52,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:52,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-18 12:21:52,963 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-18 12:21:52,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:52,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1123838779, now seen corresponding path program 1 times [2024-10-18 12:21:52,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:21:52,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950982691] [2024-10-18 12:21:52,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:52,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:21:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:53,107 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:53,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:21:53,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950982691] [2024-10-18 12:21:53,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950982691] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 12:21:53,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958434682] [2024-10-18 12:21:53,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:53,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:21:53,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:21:53,110 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) [2024-10-18 12:21:53,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-18 12:21:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:53,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-18 12:21:53,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 12:21:53,507 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:53,507 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 12:21:53,787 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:53,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958434682] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-18 12:21:53,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-18 12:21:53,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 20 [2024-10-18 12:21:53,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592905483] [2024-10-18 12:21:53,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-18 12:21:53,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-18 12:21:53,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:21:53,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-18 12:21:53,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2024-10-18 12:21:53,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:53,793 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:21:53,793 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) [2024-10-18 12:21:53,793 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:53,793 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:54,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:54,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-18 12:21:54,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-18 12:21:54,672 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 [2024-10-18 12:21:54,673 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-18 12:21:54,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:54,673 INFO L85 PathProgramCache]: Analyzing trace with hash -179045083, now seen corresponding path program 1 times [2024-10-18 12:21:54,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:21:54,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038753428] [2024-10-18 12:21:54,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:54,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:21:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-18 12:21:54,701 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-18 12:21:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-18 12:21:54,737 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-18 12:21:54,737 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-18 12:21:54,738 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-10-18 12:21:54,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-18 12:21:54,739 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-18 12:21:54,739 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (3/3) [2024-10-18 12:21:54,739 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-18 12:21:54,739 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-18 12:21:54,754 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-18 12:21:54,761 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-18 12:21:54,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-18 12:21:54,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:21:54,768 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) [2024-10-18 12:21:54,770 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 [2024-10-18 12:21:54,808 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-18 12:21:54,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:54,809 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread1of3ForFork0 ======== [2024-10-18 12:21:54,810 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;@65dffe31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=IA, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-18 12:21:54,811 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-18 12:21:55,274 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 12:21:55,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:55,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1204899885, now seen corresponding path program 1 times [2024-10-18 12:21:55,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:21:55,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95212198] [2024-10-18 12:21:55,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:55,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:21:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:55,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:55,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:21:55,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95212198] [2024-10-18 12:21:55,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95212198] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-18 12:21:55,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-18 12:21:55,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-18 12:21:55,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672240368] [2024-10-18 12:21:55,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-18 12:21:55,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-18 12:21:55,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:21:55,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-18 12:21:55,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-18 12:21:55,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:55,402 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:21:55,402 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) [2024-10-18 12:21:55,402 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:55,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:55,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-18 12:21:55,841 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 12:21:55,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:55,841 INFO L85 PathProgramCache]: Analyzing trace with hash -452149803, now seen corresponding path program 1 times [2024-10-18 12:21:55,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:21:55,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389597135] [2024-10-18 12:21:55,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:55,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:21:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:55,998 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:55,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:21:55,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389597135] [2024-10-18 12:21:55,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389597135] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 12:21:55,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676691210] [2024-10-18 12:21:55,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:55,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:21:55,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:21:56,005 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) [2024-10-18 12:21:56,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-18 12:21:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:56,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-18 12:21:56,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 12:21:56,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:56,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 12:21:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:56,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676691210] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-18 12:21:56,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-18 12:21:56,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2024-10-18 12:21:56,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792679523] [2024-10-18 12:21:56,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-18 12:21:56,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-18 12:21:56,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:21:56,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-18 12:21:56,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-10-18 12:21:56,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:56,565 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:21:56,565 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) [2024-10-18 12:21:56,565 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:56,565 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:57,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:57,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-18 12:21:57,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-18 12:21:57,263 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 [2024-10-18 12:21:57,264 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 12:21:57,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:57,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2111217242, now seen corresponding path program 1 times [2024-10-18 12:21:57,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:21:57,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754557754] [2024-10-18 12:21:57,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:57,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:21:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:57,453 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:57,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:21:57,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754557754] [2024-10-18 12:21:57,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754557754] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 12:21:57,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424044416] [2024-10-18 12:21:57,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:57,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:21:57,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:21:57,456 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) [2024-10-18 12:21:57,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-18 12:21:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:57,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-18 12:21:57,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 12:21:57,856 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:57,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 12:21:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:58,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424044416] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-18 12:21:58,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-18 12:21:58,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 27 [2024-10-18 12:21:58,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150746559] [2024-10-18 12:21:58,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-18 12:21:58,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-18 12:21:58,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:21:58,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-18 12:21:58,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2024-10-18 12:21:58,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:58,181 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:21:58,181 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) [2024-10-18 12:21:58,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:58,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-10-18 12:21:58,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:21:58,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:21:58,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-18 12:21:58,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-18 12:21:59,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-18 12:21:59,185 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 [2024-10-18 12:21:59,185 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 12:21:59,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:21:59,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1467816250, now seen corresponding path program 2 times [2024-10-18 12:21:59,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:21:59,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162777067] [2024-10-18 12:21:59,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:21:59,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:21:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:21:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 134 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:21:59,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:21:59,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162777067] [2024-10-18 12:21:59,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162777067] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 12:21:59,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039235148] [2024-10-18 12:21:59,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-18 12:21:59,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:21:59,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:21:59,774 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) [2024-10-18 12:21:59,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-18 12:21:59,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-18 12:21:59,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-18 12:21:59,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-18 12:21:59,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 12:22:00,448 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 115 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:22:00,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 12:22:01,035 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 152 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:22:01,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039235148] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-18 12:22:01,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-18 12:22:01,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 41 [2024-10-18 12:22:01,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419098757] [2024-10-18 12:22:01,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-18 12:22:01,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-18 12:22:01,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:22:01,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-18 12:22:01,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=1202, Unknown=0, NotChecked=0, Total=1640 [2024-10-18 12:22:01,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:22:01,043 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:22:01,043 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) [2024-10-18 12:22:01,043 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:22:01,043 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-10-18 12:22:01,043 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2024-10-18 12:22:01,043 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:22:07,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:22:07,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-18 12:22:07,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-18 12:22:07,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-18 12:22:07,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-18 12:22:07,770 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 [2024-10-18 12:22:07,771 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 12:22:07,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:22:07,771 INFO L85 PathProgramCache]: Analyzing trace with hash 794136986, now seen corresponding path program 1 times [2024-10-18 12:22:07,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:22:07,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509107406] [2024-10-18 12:22:07,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:22:07,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:22:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:22:07,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:22:07,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:22:07,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509107406] [2024-10-18 12:22:07,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509107406] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-18 12:22:07,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-18 12:22:07,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-18 12:22:07,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269706925] [2024-10-18 12:22:07,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-18 12:22:07,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-18 12:22:07,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:22:07,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-18 12:22:07,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-18 12:22:07,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:22:07,881 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:22:07,882 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) [2024-10-18 12:22:07,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:22:07,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2024-10-18 12:22:07,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2024-10-18 12:22:07,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2024-10-18 12:22:07,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:22:08,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:22:08,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-18 12:22:08,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-18 12:22:08,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-18 12:22:08,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-18 12:22:08,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-18 12:22:08,855 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 12:22:08,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:22:08,856 INFO L85 PathProgramCache]: Analyzing trace with hash 2132937342, now seen corresponding path program 2 times [2024-10-18 12:22:08,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:22:08,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500724443] [2024-10-18 12:22:08,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:22:08,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:22:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:22:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:22:09,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:22:09,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500724443] [2024-10-18 12:22:09,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500724443] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 12:22:09,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463343429] [2024-10-18 12:22:09,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-18 12:22:09,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:22:09,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:22:09,007 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) [2024-10-18 12:22:09,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-18 12:22:09,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-18 12:22:09,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-18 12:22:09,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-18 12:22:09,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 12:22:09,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:22:09,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 12:22:09,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:22:09,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463343429] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-18 12:22:09,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-18 12:22:09,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-10-18 12:22:09,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605772435] [2024-10-18 12:22:09,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-18 12:22:09,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-18 12:22:09,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:22:09,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-18 12:22:09,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-10-18 12:22:09,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:22:09,483 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:22:09,483 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) [2024-10-18 12:22:09,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:22:09,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2024-10-18 12:22:09,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2024-10-18 12:22:09,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2024-10-18 12:22:09,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-18 12:22:09,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:22:12,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:22:12,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-18 12:22:12,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-18 12:22:12,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-10-18 12:22:12,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-18 12:22:12,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-18 12:22:12,041 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-18 12:22:12,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-10-18 12:22:12,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:22:12,245 INFO L414 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-10-18 12:22:12,245 INFO L312 ceAbstractionStarter]: Result for error location thrThread1of3ForFork0 was SAFE (1/4) [2024-10-18 12:22:12,247 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-18 12:22:12,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-18 12:22:12,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:22:12,251 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) [2024-10-18 12:22:12,252 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 [2024-10-18 12:22:12,290 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-18 12:22:12,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:22:12,290 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-18 12:22:12,293 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;@65dffe31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=IA, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-18 12:22:12,293 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-18 12:22:13,402 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-18 12:22:13,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:22:13,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1556101928, now seen corresponding path program 1 times [2024-10-18 12:22:13,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:22:13,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166612342] [2024-10-18 12:22:13,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:22:13,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:22:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:22:13,509 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-18 12:22:13,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:22:13,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166612342] [2024-10-18 12:22:13,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166612342] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-18 12:22:13,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-18 12:22:13,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-18 12:22:13,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289066886] [2024-10-18 12:22:13,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-18 12:22:13,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-18 12:22:13,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:22:13,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-18 12:22:13,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-18 12:22:13,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:22:13,512 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:22:13,513 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) [2024-10-18 12:22:13,513 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:22:13,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:22:13,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-18 12:22:13,677 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-18 12:22:13,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:22:13,678 INFO L85 PathProgramCache]: Analyzing trace with hash 289523141, now seen corresponding path program 1 times [2024-10-18 12:22:13,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:22:13,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735907370] [2024-10-18 12:22:13,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:22:13,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:22:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:22:13,791 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-18 12:22:13,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:22:13,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735907370] [2024-10-18 12:22:13,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735907370] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 12:22:13,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125968159] [2024-10-18 12:22:13,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:22:13,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:22:13,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:22:13,794 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) [2024-10-18 12:22:13,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-18 12:22:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:22:13,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-18 12:22:13,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 12:22:14,136 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-18 12:22:14,136 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 12:22:14,262 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-18 12:22:14,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125968159] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-18 12:22:14,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-18 12:22:14,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 19 [2024-10-18 12:22:14,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011508084] [2024-10-18 12:22:14,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-18 12:22:14,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-18 12:22:14,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:22:14,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-18 12:22:14,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-10-18 12:22:14,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:22:14,266 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:22:14,266 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) [2024-10-18 12:22:14,266 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:22:14,266 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:22:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:22:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-18 12:22:14,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-10-18 12:22:14,769 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,SelfDestructingSolverStorable24 [2024-10-18 12:22:14,769 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-18 12:22:14,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:22:14,770 INFO L85 PathProgramCache]: Analyzing trace with hash -584014489, now seen corresponding path program 1 times [2024-10-18 12:22:14,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:22:14,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769718160] [2024-10-18 12:22:14,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:22:14,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:22:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:22:15,043 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:22:15,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:22:15,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769718160] [2024-10-18 12:22:15,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769718160] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 12:22:15,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396924757] [2024-10-18 12:22:15,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:22:15,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:22:15,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:22:15,046 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) [2024-10-18 12:22:15,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-18 12:22:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:22:15,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-18 12:22:15,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 12:22:15,341 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-18 12:22:15,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 12:22:15,589 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:22:15,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396924757] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-18 12:22:15,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-18 12:22:15,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 8] total 23 [2024-10-18 12:22:15,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345511418] [2024-10-18 12:22:15,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-18 12:22:15,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-18 12:22:15,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:22:15,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-18 12:22:15,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2024-10-18 12:22:15,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:22:15,596 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:22:15,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-18 12:22:15,596 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:22:15,596 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-10-18 12:22:15,596 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:22:16,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:22:16,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-18 12:22:16,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-18 12:22:16,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-10-18 12:22:17,089 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,SelfDestructingSolverStorable25 [2024-10-18 12:22:17,090 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-18 12:22:17,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:22:17,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1546545074, now seen corresponding path program 1 times [2024-10-18 12:22:17,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:22:17,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369406945] [2024-10-18 12:22:17,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:22:17,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:22:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-18 12:22:17,110 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-18 12:22:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-18 12:22:17,126 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-18 12:22:17,126 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-18 12:22:17,127 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-10-18 12:22:17,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-18 12:22:17,128 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-18 12:22:17,128 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (2/4) [2024-10-18 12:22:17,128 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-18 12:22:17,128 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-18 12:22:17,141 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-18 12:22:17,142 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-18 12:22:17,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-18 12:22:17,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:22:17,144 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-18 12:22:17,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (24)] Waiting until timeout for monitored process [2024-10-18 12:22:17,177 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-18 12:22:17,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:22:17,178 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread1of4ForFork0 ======== [2024-10-18 12:22:17,178 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;@65dffe31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=IA, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-18 12:22:17,178 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-18 12:22:17,640 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 12:22:17,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:22:17,641 INFO L85 PathProgramCache]: Analyzing trace with hash 385597409, now seen corresponding path program 1 times [2024-10-18 12:22:17,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:22:17,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708058226] [2024-10-18 12:22:17,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:22:17,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:22:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:22:17,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:22:17,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:22:17,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708058226] [2024-10-18 12:22:17,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708058226] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-18 12:22:17,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-18 12:22:17,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-18 12:22:17,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534566834] [2024-10-18 12:22:17,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-18 12:22:17,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-18 12:22:17,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:22:17,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-18 12:22:17,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-18 12:22:17,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:22:17,706 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:22:17,706 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) [2024-10-18 12:22:17,706 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:22:18,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:22:18,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-18 12:22:18,175 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 12:22:18,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:22:18,175 INFO L85 PathProgramCache]: Analyzing trace with hash 157285260, now seen corresponding path program 1 times [2024-10-18 12:22:18,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:22:18,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325365228] [2024-10-18 12:22:18,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:22:18,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:22:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:22:18,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:22:18,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:22:18,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325365228] [2024-10-18 12:22:18,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325365228] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 12:22:18,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532778770] [2024-10-18 12:22:18,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:22:18,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:22:18,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:22:18,274 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) [2024-10-18 12:22:18,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-18 12:22:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:22:18,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-18 12:22:18,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 12:22:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:22:18,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 12:22:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:22:18,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532778770] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-18 12:22:18,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-18 12:22:18,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2024-10-18 12:22:18,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565565346] [2024-10-18 12:22:18,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-18 12:22:18,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-18 12:22:18,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:22:18,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-18 12:22:18,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-10-18 12:22:18,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:22:18,687 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:22:18,687 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) [2024-10-18 12:22:18,687 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:22:18,687 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:22:19,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:22:19,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-18 12:22:19,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-10-18 12:22:19,604 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 [2024-10-18 12:22:19,605 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 12:22:19,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:22:19,605 INFO L85 PathProgramCache]: Analyzing trace with hash 61490882, now seen corresponding path program 1 times [2024-10-18 12:22:19,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:22:19,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334303028] [2024-10-18 12:22:19,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:22:19,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:22:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:22:19,819 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:22:19,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:22:19,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334303028] [2024-10-18 12:22:19,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334303028] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 12:22:19,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293258027] [2024-10-18 12:22:19,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:22:19,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:22:19,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:22:19,822 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-18 12:22:19,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-18 12:22:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:22:19,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-18 12:22:19,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 12:22:21,038 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 22 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:22:21,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 12:22:21,705 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 36 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:22:21,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293258027] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-18 12:22:21,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-18 12:22:21,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 11] total 31 [2024-10-18 12:22:21,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589392161] [2024-10-18 12:22:21,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-18 12:22:21,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-18 12:22:21,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:22:21,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-18 12:22:21,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=785, Unknown=0, NotChecked=0, Total=930 [2024-10-18 12:22:21,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:22:21,720 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:22:21,721 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) [2024-10-18 12:22:21,721 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:22:21,721 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-10-18 12:22:21,721 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:22:24,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:22:24,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-18 12:22:24,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-10-18 12:22:24,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-10-18 12:22:24,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:22:24,685 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 12:22:24,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:22:24,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1822893162, now seen corresponding path program 1 times [2024-10-18 12:22:24,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:22:24,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695410668] [2024-10-18 12:22:24,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:22:24,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:22:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:22:25,051 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:22:25,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:22:25,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695410668] [2024-10-18 12:22:25,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695410668] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 12:22:25,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945859787] [2024-10-18 12:22:25,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:22:25,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:22:25,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:22:25,054 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) [2024-10-18 12:22:25,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-18 12:22:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:22:25,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-18 12:22:25,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 12:22:25,414 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 68 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-18 12:22:25,414 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 12:22:25,699 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 67 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-18 12:22:25,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945859787] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-18 12:22:25,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-18 12:22:25,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 29 [2024-10-18 12:22:25,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034846672] [2024-10-18 12:22:25,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-18 12:22:25,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-18 12:22:25,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:22:25,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-18 12:22:25,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2024-10-18 12:22:25,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:22:25,836 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:22:25,836 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) [2024-10-18 12:22:25,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:22:25,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-10-18 12:22:25,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 56 states. [2024-10-18 12:22:25,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:22:28,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:22:28,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-18 12:22:28,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-10-18 12:22:28,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-10-18 12:22:28,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-10-18 12:22:28,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:22:28,465 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 12:22:28,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:22:28,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1049665166, now seen corresponding path program 2 times [2024-10-18 12:22:28,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:22:28,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428167188] [2024-10-18 12:22:28,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:22:28,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:22:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:22:28,827 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:22:28,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:22:28,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428167188] [2024-10-18 12:22:28,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428167188] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 12:22:28,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716962364] [2024-10-18 12:22:28,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-18 12:22:28,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:22:28,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:22:28,830 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) [2024-10-18 12:22:28,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-18 12:22:28,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-18 12:22:28,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-18 12:22:28,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-18 12:22:28,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 12:22:29,536 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 8 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:22:29,537 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 12:22:30,144 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 8 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:22:30,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716962364] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-18 12:22:30,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-18 12:22:30,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 39 [2024-10-18 12:22:30,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095615667] [2024-10-18 12:22:30,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-18 12:22:30,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-18 12:22:30,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:22:30,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-18 12:22:30,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1132, Unknown=0, NotChecked=0, Total=1482 [2024-10-18 12:22:30,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:22:30,161 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:22:30,161 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) [2024-10-18 12:22:30,161 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:22:30,161 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-10-18 12:22:30,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2024-10-18 12:22:30,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 63 states. [2024-10-18 12:22:30,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:22:32,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:22:32,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-18 12:22:32,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-10-18 12:22:32,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-10-18 12:22:32,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-18 12:22:32,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-10-18 12:22:32,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:22:32,472 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 12:22:32,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 12:22:32,472 INFO L85 PathProgramCache]: Analyzing trace with hash -534670166, now seen corresponding path program 3 times [2024-10-18 12:22:32,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 12:22:32,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509724290] [2024-10-18 12:22:32,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 12:22:32,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 12:22:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 12:22:32,988 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 515 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 12:22:32,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 12:22:32,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509724290] [2024-10-18 12:22:32,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509724290] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 12:22:32,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018589583] [2024-10-18 12:22:32,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-18 12:22:32,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 12:22:32,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 12:22:32,991 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) [2024-10-18 12:22:32,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-10-18 12:22:33,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-18 12:22:33,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-18 12:22:33,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-18 12:22:33,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 12:22:33,665 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 60 proven. 18 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-10-18 12:22:33,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 12:22:33,951 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 8 proven. 70 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-10-18 12:22:33,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018589583] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-18 12:22:33,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-18 12:22:33,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 8, 7] total 35 [2024-10-18 12:22:33,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96987723] [2024-10-18 12:22:33,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-18 12:22:33,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-18 12:22:33,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 12:22:33,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-18 12:22:33,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=902, Unknown=0, NotChecked=0, Total=1190 [2024-10-18 12:22:33,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 12:22:33,987 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 12:22:33,987 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) [2024-10-18 12:22:33,987 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-18 12:22:33,987 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-10-18 12:22:33,987 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 61 states. [2024-10-18 12:22:33,987 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 75 states. [2024-10-18 12:22:33,987 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 47 states. [2024-10-18 12:22:33,987 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.