./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-lit/sssc12_variant.i --full-output --traceabstraction.dfs.order.used.in.por LOOP_LOCKSTEP --traceabstraction.additional.conditional.commutativity.checking DFS --traceabstraction.criterion.for.conditional.commutativity.checking SLEEP_SET --traceabstraction.use.limited.checks.recommended.for.dfs true --traceabstraction.limit.for.limited.checks 5 -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_variant.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 726fce4da80b267da781dea82372ef1c43891e7d5d6ac2b3894c611bc25a242b --traceabstraction.dfs.order.used.in.por LOOP_LOCKSTEP --traceabstraction.additional.conditional.commutativity.checking DFS --traceabstraction.criterion.for.conditional.commutativity.checking SLEEP_SET --traceabstraction.use.limited.checks.recommended.for.dfs true --traceabstraction.limit.for.limited.checks 5 -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 [2024-10-19 03:08:20,031 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-19 03:08:20,080 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-10-19 03:08:20,084 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-19 03:08:20,084 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-19 03:08:20,106 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-19 03:08:20,107 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-19 03:08:20,107 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-19 03:08:20,108 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-19 03:08:20,111 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-19 03:08:20,111 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-19 03:08:20,111 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-19 03:08:20,111 INFO L153 SettingsManager]: * Use SBE=true [2024-10-19 03:08:20,112 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-19 03:08:20,112 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-19 03:08:20,112 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-19 03:08:20,112 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-19 03:08:20,112 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-19 03:08:20,112 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-19 03:08:20,113 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-19 03:08:20,113 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-19 03:08:20,113 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-19 03:08:20,114 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-19 03:08:20,114 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-19 03:08:20,114 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-19 03:08:20,114 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-19 03:08:20,114 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-19 03:08:20,114 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-19 03:08:20,115 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-19 03:08:20,115 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-19 03:08:20,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-19 03:08:20,115 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-19 03:08:20,115 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-19 03:08:20,115 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-10-19 03:08:20,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-19 03:08:20,116 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-19 03:08:20,116 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-10-19 03:08:20,116 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-19 03:08:20,116 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-19 03:08:20,116 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-10-19 03:08:20,116 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-10-19 03:08:20,118 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 -> 726fce4da80b267da781dea82372ef1c43891e7d5d6ac2b3894c611bc25a242b 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 -> DFS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Criterion for conditional commutativity checking -> SLEEP_SET Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use limited checks (recommended for DFS) -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Limit for limited checks -> 5 [2024-10-19 03:08:20,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-19 03:08:20,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-19 03:08:20,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-19 03:08:20,332 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-19 03:08:20,332 INFO L274 PluginConnector]: CDTParser initialized [2024-10-19 03:08:20,333 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread-lit/sssc12_variant.i [2024-10-19 03:08:21,490 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-19 03:08:21,695 INFO L384 CDTParser]: Found 1 translation units. [2024-10-19 03:08:21,695 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/sssc12_variant.i [2024-10-19 03:08:21,713 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/408d32b5d/516f9317f6c947fb931ef7cdce4b0685/FLAG2654cebef [2024-10-19 03:08:21,723 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/408d32b5d/516f9317f6c947fb931ef7cdce4b0685 [2024-10-19 03:08:21,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-19 03:08:21,728 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-19 03:08:21,731 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-19 03:08:21,731 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-19 03:08:21,735 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-19 03:08:21,735 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 03:08:21" (1/1) ... [2024-10-19 03:08:21,737 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d039303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 03:08:21, skipping insertion in model container [2024-10-19 03:08:21,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 03:08:21" (1/1) ... [2024-10-19 03:08:21,774 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-19 03:08:22,159 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_variant.i[46865,46878] [2024-10-19 03:08:22,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-19 03:08:22,183 INFO L200 MainTranslator]: Completed pre-run [2024-10-19 03:08:22,219 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_variant.i[46865,46878] [2024-10-19 03:08:22,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-19 03:08:22,274 INFO L204 MainTranslator]: Completed translation [2024-10-19 03:08:22,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 03:08:22 WrapperNode [2024-10-19 03:08:22,274 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-19 03:08:22,275 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-19 03:08:22,276 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-19 03:08:22,276 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-19 03:08:22,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 03:08:22" (1/1) ... [2024-10-19 03:08:22,299 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 03:08:22" (1/1) ... [2024-10-19 03:08:22,319 INFO L138 Inliner]: procedures = 274, calls = 21, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 82 [2024-10-19 03:08:22,321 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-19 03:08:22,322 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-19 03:08:22,322 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-19 03:08:22,322 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-19 03:08:22,327 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 03:08:22" (1/1) ... [2024-10-19 03:08:22,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 03:08:22" (1/1) ... [2024-10-19 03:08:22,329 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 03:08:22" (1/1) ... [2024-10-19 03:08:22,332 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 03:08:22" (1/1) ... [2024-10-19 03:08:22,335 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 03:08:22" (1/1) ... [2024-10-19 03:08:22,341 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 03:08:22" (1/1) ... [2024-10-19 03:08:22,342 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 03:08:22" (1/1) ... [2024-10-19 03:08:22,345 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 03:08:22" (1/1) ... [2024-10-19 03:08:22,347 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-19 03:08:22,347 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-19 03:08:22,347 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-19 03:08:22,351 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-19 03:08:22,352 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 03:08:22" (1/1) ... [2024-10-19 03:08:22,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-19 03:08:22,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-19 03:08:22,378 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) [2024-10-19 03:08:22,380 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 [2024-10-19 03:08:22,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-19 03:08:22,413 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2024-10-19 03:08:22,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2024-10-19 03:08:22,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-19 03:08:22,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-19 03:08:22,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-19 03:08:22,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-19 03:08:22,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-19 03:08:22,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-19 03:08:22,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-19 03:08:22,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-19 03:08:22,415 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-19 03:08:22,503 INFO L238 CfgBuilder]: Building ICFG [2024-10-19 03:08:22,504 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-19 03:08:22,615 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-19 03:08:22,615 INFO L287 CfgBuilder]: Performing block encoding [2024-10-19 03:08:22,702 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-19 03:08:22,702 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-19 03:08:22,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 03:08:22 BoogieIcfgContainer [2024-10-19 03:08:22,703 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-19 03:08:22,704 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-19 03:08:22,704 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-19 03:08:22,707 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-19 03:08:22,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 03:08:21" (1/3) ... [2024-10-19 03:08:22,707 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782294d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 03:08:22, skipping insertion in model container [2024-10-19 03:08:22,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 03:08:22" (2/3) ... [2024-10-19 03:08:22,707 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782294d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 03:08:22, skipping insertion in model container [2024-10-19 03:08:22,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 03:08:22" (3/3) ... [2024-10-19 03:08:22,708 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12_variant.i [2024-10-19 03:08:22,720 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-19 03:08:22,720 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-19 03:08:22,721 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-19 03:08:22,741 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-19 03:08:22,769 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-19 03:08:22,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-19 03:08:22,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-19 03:08:22,771 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) [2024-10-19 03:08:22,772 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 [2024-10-19 03:08:22,860 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-19 03:08:22,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:08:22,881 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-19 03:08:22,886 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;@7db9b73c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=DFS, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=true, mConComCheckerCriterionLimit=5, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-19 03:08:22,886 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-19 03:08:23,197 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-19 03:08:23,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:08:23,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1914317575, now seen corresponding path program 1 times [2024-10-19 03:08:23,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:08:23,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170217778] [2024-10-19 03:08:23,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:23,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:23,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-19 03:08:23,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:08:23,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170217778] [2024-10-19 03:08:23,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170217778] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:08:23,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:08:23,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:08:23,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752066295] [2024-10-19 03:08:23,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:08:23,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:08:23,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:08:23,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:08:23,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:08:23,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:23,578 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:08:23,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2024-10-19 03:08:23,580 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:23,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:08:23,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-19 03:08:23,701 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-19 03:08:23,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:08:23,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1914349288, now seen corresponding path program 1 times [2024-10-19 03:08:23,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:08:23,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805258801] [2024-10-19 03:08:23,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:23,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-19 03:08:23,731 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-19 03:08:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-19 03:08:23,756 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-19 03:08:23,757 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-19 03:08:23,758 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-10-19 03:08:23,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-19 03:08:23,767 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-19 03:08:23,768 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (1/2) [2024-10-19 03:08:23,769 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-19 03:08:23,769 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-19 03:08:23,781 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-19 03:08:23,783 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-19 03:08:23,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-19 03:08:23,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-19 03:08:23,787 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) [2024-10-19 03:08:23,788 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 [2024-10-19 03:08:23,819 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-19 03:08:23,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:08:23,821 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread2of2ForFork0 ======== [2024-10-19 03:08:23,822 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;@7db9b73c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=DFS, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=true, mConComCheckerCriterionLimit=5, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-19 03:08:23,824 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-19 03:08:24,395 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-19 03:08:24,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:08:24,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1821570670, now seen corresponding path program 1 times [2024-10-19 03:08:24,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:08:24,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678622748] [2024-10-19 03:08:24,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:24,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:24,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-19 03:08:24,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:08:24,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678622748] [2024-10-19 03:08:24,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678622748] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:08:24,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:08:24,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:08:24,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184665849] [2024-10-19 03:08:24,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:08:24,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:08:24,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:08:24,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:08:24,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:08:24,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:24,497 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:08:24,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-19 03:08:24,497 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:24,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:08:24,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-19 03:08:24,718 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-19 03:08:24,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:08:24,718 INFO L85 PathProgramCache]: Analyzing trace with hash -934186142, now seen corresponding path program 1 times [2024-10-19 03:08:24,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:08:24,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191583109] [2024-10-19 03:08:24,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:24,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:24,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-19 03:08:24,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:08:24,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191583109] [2024-10-19 03:08:24,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191583109] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:08:24,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:08:24,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:08:24,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511396269] [2024-10-19 03:08:24,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:08:24,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:08:24,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:08:24,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:08:24,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:08:24,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:24,820 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:08:24,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-19 03:08:24,821 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:08:24,822 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:25,556 INFO L85 PathProgramCache]: Analyzing trace with hash 248073744, now seen corresponding path program 1 times [2024-10-19 03:08:25,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:25,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:25,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-19 03:08:25,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:25,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:25,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-19 03:08:25,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:08:25,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:08:25,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:08:25,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:08:25,743 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-19 03:08:25,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,SelfDestructingSolverStorable3,SelfDestructingSolverStorable5 [2024-10-19 03:08:25,748 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-19 03:08:25,749 INFO L312 ceAbstractionStarter]: Result for error location thrThread2of2ForFork0 was SAFE (1/3) [2024-10-19 03:08:25,751 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-19 03:08:25,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-19 03:08:25,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-19 03:08:25,753 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-19 03:08:25,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2024-10-19 03:08:25,781 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-19 03:08:25,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:08:25,782 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread1of2ForFork0 ======== [2024-10-19 03:08:25,782 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;@7db9b73c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=DFS, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=true, mConComCheckerCriterionLimit=5, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-19 03:08:25,783 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-19 03:08:26,095 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-19 03:08:26,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:08:26,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1463275104, now seen corresponding path program 1 times [2024-10-19 03:08:26,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:08:26,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021888027] [2024-10-19 03:08:26,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:26,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:26,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-19 03:08:26,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:08:26,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021888027] [2024-10-19 03:08:26,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021888027] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:08:26,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:08:26,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:08:26,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629208274] [2024-10-19 03:08:26,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:08:26,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:08:26,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:08:26,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:08:26,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:08:26,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:26,143 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:08:26,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2024-10-19 03:08:26,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:27,003 INFO L85 PathProgramCache]: Analyzing trace with hash 248073809, now seen corresponding path program 1 times [2024-10-19 03:08:27,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:27,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:27,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-19 03:08:27,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:27,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-19 03:08:27,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:08:27,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:08:27,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:08:27,137 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-19 03:08:27,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,SelfDestructingSolverStorable7,SelfDestructingSolverStorable6 [2024-10-19 03:08:27,141 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-19 03:08:27,141 INFO L312 ceAbstractionStarter]: Result for error location thrThread1of2ForFork0 was SAFE (2/3) [2024-10-19 03:08:27,145 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-19 03:08:27,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-19 03:08:27,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-19 03:08:27,147 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-19 03:08:27,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process [2024-10-19 03:08:27,175 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-19 03:08:27,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:08:27,175 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-19 03:08:27,176 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;@7db9b73c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=DFS, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=true, mConComCheckerCriterionLimit=5, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-19 03:08:27,176 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-19 03:08:27,497 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-19 03:08:27,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:08:27,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1817251697, now seen corresponding path program 1 times [2024-10-19 03:08:27,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:08:27,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689254340] [2024-10-19 03:08:27,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:27,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:27,549 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-19 03:08:27,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:08:27,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689254340] [2024-10-19 03:08:27,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689254340] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:08:27,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:08:27,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:08:27,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961667335] [2024-10-19 03:08:27,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:08:27,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:08:27,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:08:27,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:08:27,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:08:27,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:27,551 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:08:27,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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) [2024-10-19 03:08:27,551 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:27,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:08:27,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-19 03:08:27,700 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-19 03:08:27,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:08:27,700 INFO L85 PathProgramCache]: Analyzing trace with hash -104708799, now seen corresponding path program 1 times [2024-10-19 03:08:27,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:08:27,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844553200] [2024-10-19 03:08:27,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:27,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:27,772 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-19 03:08:27,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:08:27,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844553200] [2024-10-19 03:08:27,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844553200] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:08:27,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:08:27,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:08:27,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461744340] [2024-10-19 03:08:27,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:08:27,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:08:27,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:08:27,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:08:27,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:08:27,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:27,773 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:08:27,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-19 03:08:27,774 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:08:27,774 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:27,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:08:27,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:08:27,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-19 03:08:27,868 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-19 03:08:27,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:08:27,868 INFO L85 PathProgramCache]: Analyzing trace with hash -104677086, now seen corresponding path program 1 times [2024-10-19 03:08:27,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:08:27,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371425897] [2024-10-19 03:08:27,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:27,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-19 03:08:27,888 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-19 03:08:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-19 03:08:27,906 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-19 03:08:27,906 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-19 03:08:27,907 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-10-19 03:08:27,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-19 03:08:27,908 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-19 03:08:27,908 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (3/3) [2024-10-19 03:08:27,908 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-19 03:08:27,908 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-19 03:08:27,918 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-19 03:08:27,919 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-19 03:08:27,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-19 03:08:27,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-19 03:08:27,921 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-19 03:08:27,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Waiting until timeout for monitored process [2024-10-19 03:08:27,951 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-19 03:08:27,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:08:27,952 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread1of3ForFork0 ======== [2024-10-19 03:08:27,952 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;@7db9b73c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=DFS, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=true, mConComCheckerCriterionLimit=5, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-19 03:08:27,952 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-19 03:08:28,385 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-19 03:08:28,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:08:28,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1978324284, now seen corresponding path program 1 times [2024-10-19 03:08:28,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:08:28,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152600297] [2024-10-19 03:08:28,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:28,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:28,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-19 03:08:28,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:08:28,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152600297] [2024-10-19 03:08:28,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152600297] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:08:28,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:08:28,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:08:28,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929929704] [2024-10-19 03:08:28,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:08:28,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:08:28,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:08:28,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:08:28,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:08:28,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:28,420 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:08:28,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2024-10-19 03:08:28,420 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:30,108 INFO L85 PathProgramCache]: Analyzing trace with hash 251135462, now seen corresponding path program 1 times [2024-10-19 03:08:30,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:30,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:30,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-19 03:08:30,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:30,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-19 03:08:30,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:08:30,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:08:31,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:08:31,022 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-19 03:08:31,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,SelfDestructingSolverStorable13,SelfDestructingSolverStorable14 [2024-10-19 03:08:31,025 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-19 03:08:31,025 INFO L312 ceAbstractionStarter]: Result for error location thrThread1of3ForFork0 was SAFE (1/4) [2024-10-19 03:08:31,026 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-19 03:08:31,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-19 03:08:31,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-19 03:08:31,029 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-19 03:08:31,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (7)] Waiting until timeout for monitored process [2024-10-19 03:08:31,058 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-19 03:08:31,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:08:31,059 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-19 03:08:31,060 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;@7db9b73c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=DFS, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=true, mConComCheckerCriterionLimit=5, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-19 03:08:31,060 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-19 03:08:31,850 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-19 03:08:31,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:08:31,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1854143918, now seen corresponding path program 1 times [2024-10-19 03:08:31,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:08:31,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321599914] [2024-10-19 03:08:31,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:31,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:31,922 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-19 03:08:31,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:08:31,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321599914] [2024-10-19 03:08:31,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321599914] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:08:31,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:08:31,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:08:31,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597798681] [2024-10-19 03:08:31,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:08:31,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:08:31,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:08:31,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:08:31,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:08:31,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:31,924 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:08:31,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 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) [2024-10-19 03:08:31,924 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:32,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:08:32,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-19 03:08:32,149 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-19 03:08:32,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:08:32,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1484659707, now seen corresponding path program 1 times [2024-10-19 03:08:32,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:08:32,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674058758] [2024-10-19 03:08:32,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:32,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:32,229 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-19 03:08:32,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:08:32,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674058758] [2024-10-19 03:08:32,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674058758] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:08:32,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:08:32,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:08:32,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416865605] [2024-10-19 03:08:32,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:08:32,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:08:32,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:08:32,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:08:32,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:08:32,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:32,231 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:08:32,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-19 03:08:32,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:08:32,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:32,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:08:32,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:08:32,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-19 03:08:32,373 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-19 03:08:32,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:08:32,373 INFO L85 PathProgramCache]: Analyzing trace with hash 2127296013, now seen corresponding path program 1 times [2024-10-19 03:08:32,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:08:32,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220624763] [2024-10-19 03:08:32,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:32,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:32,481 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-19 03:08:32,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:08:32,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220624763] [2024-10-19 03:08:32,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220624763] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:08:32,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:08:32,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:08:32,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682085386] [2024-10-19 03:08:32,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:08:32,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:08:32,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:08:32,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:08:32,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:08:32,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:32,483 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:08:32,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-19 03:08:32,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:08:32,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:08:32,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:32,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:08:32,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:08:32,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:08:32,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-19 03:08:32,566 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-19 03:08:32,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:08:32,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2127327726, now seen corresponding path program 1 times [2024-10-19 03:08:32,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:08:32,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468922371] [2024-10-19 03:08:32,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:32,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-19 03:08:32,590 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-19 03:08:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-19 03:08:32,619 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-19 03:08:32,619 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-19 03:08:32,620 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-10-19 03:08:32,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-19 03:08:32,622 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-19 03:08:32,622 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (2/4) [2024-10-19 03:08:32,622 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-19 03:08:32,623 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-19 03:08:32,637 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-19 03:08:32,640 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-19 03:08:32,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-19 03:08:32,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-19 03:08:32,643 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-19 03:08:32,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Waiting until timeout for monitored process [2024-10-19 03:08:32,675 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-19 03:08:32,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:08:32,676 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread1of4ForFork0 ======== [2024-10-19 03:08:32,676 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;@7db9b73c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=DFS, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=true, mConComCheckerCriterionLimit=5, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-19 03:08:32,676 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-19 03:08:33,219 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-19 03:08:33,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:08:33,219 INFO L85 PathProgramCache]: Analyzing trace with hash 780080944, now seen corresponding path program 1 times [2024-10-19 03:08:33,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:08:33,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160067757] [2024-10-19 03:08:33,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:33,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:33,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-19 03:08:33,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:08:33,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160067757] [2024-10-19 03:08:33,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160067757] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:08:33,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:08:33,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:08:33,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889635278] [2024-10-19 03:08:33,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:08:33,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:08:33,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:08:33,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:08:33,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:08:33,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:33,277 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:08:33,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2024-10-19 03:08:33,277 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:35,147 INFO L85 PathProgramCache]: Analyzing trace with hash -519354578, now seen corresponding path program 1 times [2024-10-19 03:08:35,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:35,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:35,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-19 03:08:35,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:35,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:35,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-19 03:08:35,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:08:35,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:08:38,449 INFO L85 PathProgramCache]: Analyzing trace with hash 215713641, now seen corresponding path program 1 times [2024-10-19 03:08:38,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:38,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:38,506 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-19 03:08:38,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:38,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:38,542 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-19 03:08:38,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:08:38,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-19 03:08:45,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:08:45,306 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-19 03:08:45,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,SelfDestructingSolverStorable20,SelfDestructingSolverStorable21,SelfDestructingSolverStorable22,SelfDestructingSolverStorable23 [2024-10-19 03:08:45,307 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-19 03:08:45,308 INFO L312 ceAbstractionStarter]: Result for error location thrThread1of4ForFork0 was SAFE (1/5) [2024-10-19 03:08:45,309 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-19 03:08:45,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-19 03:08:45,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-19 03:08:45,310 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) [2024-10-19 03:08:45,312 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 [2024-10-19 03:08:45,338 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-19 03:08:45,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:08:45,339 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread2of4ForFork0 ======== [2024-10-19 03:08:45,339 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;@7db9b73c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=DFS, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=true, mConComCheckerCriterionLimit=5, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-19 03:08:45,339 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-19 03:08:46,357 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-19 03:08:46,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:08:46,358 INFO L85 PathProgramCache]: Analyzing trace with hash -866303780, now seen corresponding path program 1 times [2024-10-19 03:08:46,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:08:46,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878329603] [2024-10-19 03:08:46,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:46,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-19 03:08:46,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:08:46,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878329603] [2024-10-19 03:08:46,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878329603] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:08:46,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:08:46,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:08:46,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370480136] [2024-10-19 03:08:46,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:08:46,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:08:46,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:08:46,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:08:46,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:08:46,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:46,433 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:08:46,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-19 03:08:46,433 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:46,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:08:46,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-19 03:08:46,628 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-19 03:08:46,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:08:46,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1741065962, now seen corresponding path program 1 times [2024-10-19 03:08:46,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:08:46,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459214739] [2024-10-19 03:08:46,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:46,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:46,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-19 03:08:46,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:08:46,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459214739] [2024-10-19 03:08:46,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459214739] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:08:46,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:08:46,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:08:46,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938466262] [2024-10-19 03:08:46,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:08:46,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:08:46,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:08:46,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:08:46,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:08:46,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:46,694 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:08:46,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-19 03:08:46,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:08:46,695 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:08:50,660 INFO L85 PathProgramCache]: Analyzing trace with hash 215713858, now seen corresponding path program 1 times [2024-10-19 03:08:50,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:50,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:50,693 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-19 03:08:50,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:08:50,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:08:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:08:50,722 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-19 03:08:50,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:08:50,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:09:00,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:00,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:00,176 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-19 03:09:00,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,SelfDestructingSolverStorable26,SelfDestructingSolverStorable27 [2024-10-19 03:09:00,177 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-19 03:09:00,177 INFO L312 ceAbstractionStarter]: Result for error location thrThread2of4ForFork0 was SAFE (2/5) [2024-10-19 03:09:00,178 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-19 03:09:00,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-19 03:09:00,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-19 03:09:00,179 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-19 03:09:00,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (10)] Waiting until timeout for monitored process [2024-10-19 03:09:00,206 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-19 03:09:00,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:09:00,206 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread3of4ForFork0 ======== [2024-10-19 03:09:00,207 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;@7db9b73c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=DFS, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=true, mConComCheckerCriterionLimit=5, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-19 03:09:00,207 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-19 03:09:01,313 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-19 03:09:01,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:09:01,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1821477479, now seen corresponding path program 1 times [2024-10-19 03:09:01,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:09:01,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747379729] [2024-10-19 03:09:01,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:09:01,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:09:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:09:01,370 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-19 03:09:01,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:09:01,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747379729] [2024-10-19 03:09:01,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747379729] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:09:01,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:09:01,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:09:01,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115423396] [2024-10-19 03:09:01,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:09:01,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:09:01,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:09:01,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:09:01,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:09:01,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:01,372 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:09:01,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-19 03:09:01,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:01,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:01,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-19 03:09:01,582 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-19 03:09:01,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:09:01,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1828765852, now seen corresponding path program 1 times [2024-10-19 03:09:01,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:09:01,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141656757] [2024-10-19 03:09:01,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:09:01,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:09:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:09:01,653 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-19 03:09:01,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:09:01,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141656757] [2024-10-19 03:09:01,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141656757] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:09:01,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:09:01,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:09:01,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369287020] [2024-10-19 03:09:01,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:09:01,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:09:01,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:09:01,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:09:01,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:09:01,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:01,655 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:09:01,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-10-19 03:09:01,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:01,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:01,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:01,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:01,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-19 03:09:01,784 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-19 03:09:01,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:09:01,784 INFO L85 PathProgramCache]: Analyzing trace with hash 206470016, now seen corresponding path program 1 times [2024-10-19 03:09:01,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:09:01,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201692649] [2024-10-19 03:09:01,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:09:01,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:09:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:09:01,843 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-19 03:09:01,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:09:01,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201692649] [2024-10-19 03:09:01,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201692649] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:09:01,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:09:01,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:09:01,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333532816] [2024-10-19 03:09:01,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:09:01,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:09:01,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:09:01,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:09:01,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:09:01,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:01,844 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:09:01,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2024-10-19 03:09:01,845 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:01,845 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:01,845 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:04,383 INFO L85 PathProgramCache]: Analyzing trace with hash 215714077, now seen corresponding path program 1 times [2024-10-19 03:09:04,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:09:04,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:09:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:09:04,415 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-19 03:09:04,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:09:04,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:09:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:09:04,453 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-19 03:09:04,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:09:04,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:09:12,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:12,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:12,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:12,956 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-19 03:09:12,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,SelfDestructingSolverStorable31,SelfDestructingSolverStorable32 [2024-10-19 03:09:12,958 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-19 03:09:12,958 INFO L312 ceAbstractionStarter]: Result for error location thrThread3of4ForFork0 was SAFE (3/5) [2024-10-19 03:09:12,959 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-19 03:09:12,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-19 03:09:12,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-19 03:09:12,960 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-19 03:09:12,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (11)] Waiting until timeout for monitored process [2024-10-19 03:09:12,989 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-19 03:09:12,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:09:12,990 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread4of4ForFork0 ======== [2024-10-19 03:09:12,990 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;@7db9b73c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=DFS, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=true, mConComCheckerCriterionLimit=5, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-19 03:09:12,990 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-19 03:09:14,010 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-19 03:09:14,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:09:14,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1888132429, now seen corresponding path program 1 times [2024-10-19 03:09:14,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:09:14,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549400908] [2024-10-19 03:09:14,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:09:14,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:09:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:09:14,062 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-19 03:09:14,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:09:14,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549400908] [2024-10-19 03:09:14,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549400908] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:09:14,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:09:14,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:09:14,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247815262] [2024-10-19 03:09:14,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:09:14,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:09:14,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:09:14,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:09:14,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:09:14,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:14,064 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:09:14,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-10-19 03:09:14,064 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:14,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:14,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-10-19 03:09:14,311 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-19 03:09:14,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:09:14,311 INFO L85 PathProgramCache]: Analyzing trace with hash 586113059, now seen corresponding path program 1 times [2024-10-19 03:09:14,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:09:14,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838453938] [2024-10-19 03:09:14,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:09:14,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:09:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:09:14,380 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-19 03:09:14,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:09:14,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838453938] [2024-10-19 03:09:14,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838453938] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:09:14,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:09:14,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:09:14,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698365922] [2024-10-19 03:09:14,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:09:14,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:09:14,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:09:14,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:09:14,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:09:14,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:14,382 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:09:14,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-10-19 03:09:14,383 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:14,383 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:14,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:14,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:14,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-10-19 03:09:14,582 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-19 03:09:14,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:09:14,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1732700466, now seen corresponding path program 1 times [2024-10-19 03:09:14,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:09:14,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794307127] [2024-10-19 03:09:14,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:09:14,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:09:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:09:14,655 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-19 03:09:14,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:09:14,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794307127] [2024-10-19 03:09:14,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794307127] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:09:14,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:09:14,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:09:14,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324396057] [2024-10-19 03:09:14,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:09:14,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:09:14,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:09:14,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:09:14,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:09:14,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:14,657 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:09:14,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-10-19 03:09:14,658 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:14,658 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:14,658 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:14,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:14,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:14,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:14,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-10-19 03:09:14,798 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-19 03:09:14,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:09:14,798 INFO L85 PathProgramCache]: Analyzing trace with hash 363777596, now seen corresponding path program 1 times [2024-10-19 03:09:14,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:09:14,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231165115] [2024-10-19 03:09:14,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:09:14,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:09:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:09:14,874 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-19 03:09:14,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:09:14,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231165115] [2024-10-19 03:09:14,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231165115] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:09:14,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:09:14,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:09:14,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508292531] [2024-10-19 03:09:14,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:09:14,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:09:14,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:09:14,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:09:14,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:09:14,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:14,876 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:09:14,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-19 03:09:14,876 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:14,876 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:14,876 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:14,876 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:16,807 INFO L85 PathProgramCache]: Analyzing trace with hash 215714296, now seen corresponding path program 1 times [2024-10-19 03:09:16,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:09:16,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:09:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:09:16,836 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-19 03:09:16,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:09:16,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:09:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:09:16,862 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-19 03:09:16,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:09:16,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:09:23,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:23,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:23,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:23,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:23,768 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-19 03:09:23,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,SelfDestructingSolverStorable37,SelfDestructingSolverStorable38 [2024-10-19 03:09:23,769 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-19 03:09:23,769 INFO L312 ceAbstractionStarter]: Result for error location thrThread4of4ForFork0 was SAFE (4/5) [2024-10-19 03:09:23,770 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-19 03:09:23,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-19 03:09:23,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-19 03:09:23,772 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-19 03:09:23,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (12)] Waiting until timeout for monitored process [2024-10-19 03:09:23,800 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-19 03:09:23,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:09:23,800 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-19 03:09:23,801 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;@7db9b73c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=DFS, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=true, mConComCheckerCriterionLimit=5, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-19 03:09:23,801 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-19 03:09:24,872 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-19 03:09:24,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:09:24,872 INFO L85 PathProgramCache]: Analyzing trace with hash -2019041366, now seen corresponding path program 1 times [2024-10-19 03:09:24,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:09:24,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41334545] [2024-10-19 03:09:24,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:09:24,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:09:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:09:24,923 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-19 03:09:24,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:09:24,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41334545] [2024-10-19 03:09:24,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41334545] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:09:24,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:09:24,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:09:24,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464160569] [2024-10-19 03:09:24,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:09:24,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:09:24,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:09:24,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:09:24,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:09:24,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:24,924 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:09:24,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-10-19 03:09:24,924 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:25,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:25,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-10-19 03:09:25,208 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-19 03:09:25,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:09:25,208 INFO L85 PathProgramCache]: Analyzing trace with hash 613957914, now seen corresponding path program 1 times [2024-10-19 03:09:25,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:09:25,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719677702] [2024-10-19 03:09:25,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:09:25,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:09:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:09:25,270 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-19 03:09:25,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:09:25,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719677702] [2024-10-19 03:09:25,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719677702] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:09:25,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:09:25,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:09:25,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332469211] [2024-10-19 03:09:25,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:09:25,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:09:25,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:09:25,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:09:25,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:09:25,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:25,271 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:09:25,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-19 03:09:25,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:25,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:25,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:25,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:25,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-10-19 03:09:25,446 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-19 03:09:25,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:09:25,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1322187013, now seen corresponding path program 1 times [2024-10-19 03:09:25,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:09:25,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410137827] [2024-10-19 03:09:25,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:09:25,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:09:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:09:25,512 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-19 03:09:25,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:09:25,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410137827] [2024-10-19 03:09:25,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410137827] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:09:25,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:09:25,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:09:25,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935879267] [2024-10-19 03:09:25,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:09:25,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:09:25,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:09:25,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:09:25,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:09:25,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:25,514 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:09:25,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-19 03:09:25,514 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:25,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:25,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:25,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:25,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:25,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:25,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-10-19 03:09:25,656 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-19 03:09:25,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:09:25,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1697942771, now seen corresponding path program 1 times [2024-10-19 03:09:25,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:09:25,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452739726] [2024-10-19 03:09:25,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:09:25,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:09:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:09:25,729 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-19 03:09:25,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:09:25,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452739726] [2024-10-19 03:09:25,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452739726] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:09:25,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:09:25,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:09:25,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026685748] [2024-10-19 03:09:25,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:09:25,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:09:25,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:09:25,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:09:25,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:09:25,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:25,731 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:09:25,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-10-19 03:09:25,732 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:25,732 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:25,732 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:25,732 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:25,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:25,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:25,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:25,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:25,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-10-19 03:09:25,828 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-19 03:09:25,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:09:25,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1697974484, now seen corresponding path program 1 times [2024-10-19 03:09:25,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:09:25,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898664096] [2024-10-19 03:09:25,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:09:25,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:09:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-19 03:09:25,855 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-19 03:09:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-19 03:09:25,891 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-19 03:09:25,891 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-19 03:09:25,892 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-10-19 03:09:25,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-10-19 03:09:25,893 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-19 03:09:25,893 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (5/5) [2024-10-19 03:09:25,893 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-19 03:09:25,893 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-19 03:09:25,911 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-19 03:09:25,914 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-19 03:09:25,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-19 03:09:25,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-19 03:09:25,916 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-19 03:09:25,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (13)] Waiting until timeout for monitored process [2024-10-19 03:09:25,946 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-19 03:09:25,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:09:25,947 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thrThread4of5ForFork0 ======== [2024-10-19 03:09:25,947 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;@7db9b73c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=DFS, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=true, mConComCheckerCriterionLimit=5, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-19 03:09:25,947 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-19 03:09:27,502 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-19 03:09:27,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:09:27,503 INFO L85 PathProgramCache]: Analyzing trace with hash -663749462, now seen corresponding path program 1 times [2024-10-19 03:09:27,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:09:27,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694979942] [2024-10-19 03:09:27,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:09:27,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:09:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:09:27,548 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-19 03:09:27,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:09:27,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694979942] [2024-10-19 03:09:27,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694979942] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:09:27,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:09:27,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:09:27,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015704007] [2024-10-19 03:09:27,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:09:27,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:09:27,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:09:27,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:09:27,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:09:27,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:27,550 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:09:27,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-10-19 03:09:27,551 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:27,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:27,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-10-19 03:09:27,848 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-19 03:09:27,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:09:27,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1859278013, now seen corresponding path program 1 times [2024-10-19 03:09:27,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:09:27,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506736907] [2024-10-19 03:09:27,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:09:27,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:09:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:09:27,910 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-19 03:09:27,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:09:27,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506736907] [2024-10-19 03:09:27,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506736907] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:09:27,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:09:27,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:09:27,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513174442] [2024-10-19 03:09:27,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:09:27,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:09:27,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:09:27,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:09:27,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:09:27,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:27,912 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:09:27,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-10-19 03:09:27,913 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:27,913 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:28,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:28,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:28,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-10-19 03:09:28,110 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-19 03:09:28,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:09:28,110 INFO L85 PathProgramCache]: Analyzing trace with hash -432156114, now seen corresponding path program 1 times [2024-10-19 03:09:28,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:09:28,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636024955] [2024-10-19 03:09:28,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:09:28,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:09:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:09:28,180 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-19 03:09:28,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:09:28,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636024955] [2024-10-19 03:09:28,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636024955] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:09:28,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:09:28,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:09:28,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156379741] [2024-10-19 03:09:28,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:09:28,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:09:28,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:09:28,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:09:28,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:09:28,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:28,182 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:09:28,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-10-19 03:09:28,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:28,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:28,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:28,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:28,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:28,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:28,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-10-19 03:09:28,331 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-19 03:09:28,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 03:09:28,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1756566347, now seen corresponding path program 1 times [2024-10-19 03:09:28,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 03:09:28,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135885667] [2024-10-19 03:09:28,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:09:28,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:09:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:09:28,409 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-19 03:09:28,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 03:09:28,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135885667] [2024-10-19 03:09:28,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135885667] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 03:09:28,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 03:09:28,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-19 03:09:28,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548021319] [2024-10-19 03:09:28,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 03:09:28,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-19 03:09:28,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 03:09:28,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:09:28,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-19 03:09:28,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:28,412 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 03:09:28,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-19 03:09:28,412 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:28,412 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:28,412 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-19 03:09:28,412 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 03:09:42,864 INFO L85 PathProgramCache]: Analyzing trace with hash -465918252, now seen corresponding path program 1 times [2024-10-19 03:09:42,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:09:42,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:09:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:09:42,898 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-19 03:09:42,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 03:09:42,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 03:09:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 03:09:42,933 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-19 03:09:42,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-19 03:09:42,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6