./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i --full-output --traceabstraction.dfs.order.used.in.por LOOP_LOCKSTEP --traceabstraction.additional.conditional.commutativity.checking COUNTEREXAMPLE --traceabstraction.criterion.for.conditional.commutativity.checking DEFAULT --traceabstraction.tracecheck.mode.for.conditional.commutativity GENERATOR -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-ext/29_conditionals_vs.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 c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 --traceabstraction.dfs.order.used.in.por LOOP_LOCKSTEP --traceabstraction.additional.conditional.commutativity.checking COUNTEREXAMPLE --traceabstraction.criterion.for.conditional.commutativity.checking DEFAULT --traceabstraction.tracecheck.mode.for.conditional.commutativity GENERATOR -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 [2024-10-16 23:39:13,279 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-16 23:39:13,370 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-10-16 23:39:13,380 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-16 23:39:13,385 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-16 23:39:13,426 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-16 23:39:13,427 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-16 23:39:13,428 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-16 23:39:13,429 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-16 23:39:13,432 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-16 23:39:13,432 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-16 23:39:13,439 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-16 23:39:13,439 INFO L153 SettingsManager]: * Use SBE=true [2024-10-16 23:39:13,441 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-16 23:39:13,441 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-16 23:39:13,441 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-16 23:39:13,441 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-16 23:39:13,441 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-16 23:39:13,442 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-16 23:39:13,442 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-16 23:39:13,442 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-16 23:39:13,442 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-16 23:39:13,443 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-16 23:39:13,443 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-16 23:39:13,444 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-16 23:39:13,444 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-16 23:39:13,444 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-16 23:39:13,444 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-16 23:39:13,445 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-16 23:39:13,445 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-16 23:39:13,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-16 23:39:13,445 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-16 23:39:13,446 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-16 23:39:13,446 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-10-16 23:39:13,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-16 23:39:13,446 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-16 23:39:13,447 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-10-16 23:39:13,447 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-16 23:39:13,447 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-16 23:39:13,447 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-10-16 23:39:13,447 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-10-16 23:39:13,448 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 -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: DFS Order used in POR -> LOOP_LOCKSTEP Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional conditional commutativity checking -> COUNTEREXAMPLE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Criterion for conditional commutativity checking -> DEFAULT Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: TraceCheck mode for conditional commutativity -> GENERATOR [2024-10-16 23:39:13,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-16 23:39:13,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-16 23:39:13,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-16 23:39:13,668 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-16 23:39:13,668 INFO L274 PluginConnector]: CDTParser initialized [2024-10-16 23:39:13,669 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i [2024-10-16 23:39:14,985 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-16 23:39:15,217 INFO L384 CDTParser]: Found 1 translation units. [2024-10-16 23:39:15,218 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i [2024-10-16 23:39:15,233 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/4f705531e/3053235a88144e9089a8b0ec99fa24dc/FLAG6fd5089c3 [2024-10-16 23:39:15,550 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/4f705531e/3053235a88144e9089a8b0ec99fa24dc [2024-10-16 23:39:15,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-16 23:39:15,554 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-16 23:39:15,555 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-16 23:39:15,555 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-16 23:39:15,559 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-16 23:39:15,560 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:39:15" (1/1) ... [2024-10-16 23:39:15,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cabe77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:15, skipping insertion in model container [2024-10-16 23:39:15,564 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:39:15" (1/1) ... [2024-10-16 23:39:15,594 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-16 23:39:15,887 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-ext/29_conditionals_vs.i[30422,30435] [2024-10-16 23:39:15,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-16 23:39:15,912 INFO L200 MainTranslator]: Completed pre-run [2024-10-16 23:39:15,959 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-ext/29_conditionals_vs.i[30422,30435] [2024-10-16 23:39:15,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-16 23:39:15,994 INFO L204 MainTranslator]: Completed translation [2024-10-16 23:39:15,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:15 WrapperNode [2024-10-16 23:39:15,995 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-16 23:39:15,996 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-16 23:39:15,996 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-16 23:39:15,996 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-16 23:39:16,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:15" (1/1) ... [2024-10-16 23:39:16,022 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:15" (1/1) ... [2024-10-16 23:39:16,041 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 58 [2024-10-16 23:39:16,041 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-16 23:39:16,044 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-16 23:39:16,045 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-16 23:39:16,045 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-16 23:39:16,051 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:15" (1/1) ... [2024-10-16 23:39:16,051 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:15" (1/1) ... [2024-10-16 23:39:16,052 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:15" (1/1) ... [2024-10-16 23:39:16,052 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:15" (1/1) ... [2024-10-16 23:39:16,056 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:15" (1/1) ... [2024-10-16 23:39:16,061 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:15" (1/1) ... [2024-10-16 23:39:16,062 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:15" (1/1) ... [2024-10-16 23:39:16,067 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:15" (1/1) ... [2024-10-16 23:39:16,068 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-16 23:39:16,069 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-16 23:39:16,073 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-16 23:39:16,073 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-16 23:39:16,074 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:15" (1/1) ... [2024-10-16 23:39:16,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-16 23:39:16,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-16 23:39:16,118 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) [2024-10-16 23:39:16,136 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 [2024-10-16 23:39:16,171 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-16 23:39:16,171 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-16 23:39:16,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-16 23:39:16,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-16 23:39:16,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-16 23:39:16,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-16 23:39:16,173 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-16 23:39:16,300 INFO L238 CfgBuilder]: Building ICFG [2024-10-16 23:39:16,302 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-16 23:39:16,414 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-16 23:39:16,415 INFO L287 CfgBuilder]: Performing block encoding [2024-10-16 23:39:16,504 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-16 23:39:16,504 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-16 23:39:16,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:39:16 BoogieIcfgContainer [2024-10-16 23:39:16,508 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-16 23:39:16,511 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-16 23:39:16,511 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-16 23:39:16,516 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-16 23:39:16,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:39:15" (1/3) ... [2024-10-16 23:39:16,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c43efe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:39:16, skipping insertion in model container [2024-10-16 23:39:16,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:39:15" (2/3) ... [2024-10-16 23:39:16,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c43efe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:39:16, skipping insertion in model container [2024-10-16 23:39:16,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:39:16" (3/3) ... [2024-10-16 23:39:16,518 INFO L112 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2024-10-16 23:39:16,531 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-16 23:39:16,531 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-16 23:39:16,532 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-16 23:39:16,553 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-16 23:39:16,587 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-16 23:39:16,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-16 23:39:16,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-16 23:39:16,589 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) [2024-10-16 23:39:16,591 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 [2024-10-16 23:39:16,654 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-16 23:39:16,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:16,672 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork0 ======== [2024-10-16 23:39:16,677 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;@667612ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-16 23:39:16,677 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-16 23:39:16,901 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-16 23:39:16,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:16,904 INFO L85 PathProgramCache]: Analyzing trace with hash 987478341, now seen corresponding path program 1 times [2024-10-16 23:39:16,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:16,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869794517] [2024-10-16 23:39:16,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:16,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:17,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-16 23:39:17,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:17,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869794517] [2024-10-16 23:39:17,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869794517] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:17,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:17,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:17,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157612764] [2024-10-16 23:39:17,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:17,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:17,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:17,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:17,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:17,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:17,310 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:17,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-10-16 23:39:17,310 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:17,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:17,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-16 23:39:17,439 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-16 23:39:17,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:17,439 INFO L85 PathProgramCache]: Analyzing trace with hash 987479364, now seen corresponding path program 1 times [2024-10-16 23:39:17,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:17,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553514853] [2024-10-16 23:39:17,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:17,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:17,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-16 23:39:17,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:17,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553514853] [2024-10-16 23:39:17,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553514853] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:17,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:17,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:17,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852718365] [2024-10-16 23:39:17,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:17,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:17,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:17,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:17,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:17,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:17,516 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:17,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-10-16 23:39:17,516 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:17,516 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:17,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:17,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:17,597 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-16 23:39:17,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-16 23:39:17,610 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-16 23:39:17,615 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was SAFE (1/2) [2024-10-16 23:39:17,618 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-16 23:39:17,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-16 23:39:17,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-16 23:39:17,640 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) [2024-10-16 23:39:17,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2024-10-16 23:39:17,684 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-16 23:39:17,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:17,685 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-16 23:39:17,686 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;@667612ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-16 23:39:17,686 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-16 23:39:17,790 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-16 23:39:17,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:17,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1736412153, now seen corresponding path program 1 times [2024-10-16 23:39:17,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:17,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073635547] [2024-10-16 23:39:17,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:17,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:17,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-16 23:39:17,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:17,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073635547] [2024-10-16 23:39:17,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073635547] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:17,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:17,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:17,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602133890] [2024-10-16 23:39:17,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:17,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:17,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:17,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:17,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:17,843 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:17,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2024-10-16 23:39:17,843 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:17,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:17,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-16 23:39:17,892 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-16 23:39:17,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:17,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1974782357, now seen corresponding path program 1 times [2024-10-16 23:39:17,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:17,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950000081] [2024-10-16 23:39:17,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:17,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-16 23:39:17,904 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-16 23:39:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-16 23:39:17,925 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-16 23:39:17,926 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-16 23:39:17,926 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-10-16 23:39:17,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-16 23:39:17,928 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-16 23:39:17,929 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (2/2) [2024-10-16 23:39:17,929 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-16 23:39:17,929 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-16 23:39:17,939 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-16 23:39:17,941 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-16 23:39:17,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-16 23:39:17,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-16 23:39:17,943 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) [2024-10-16 23:39:17,944 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 [2024-10-16 23:39:17,970 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-16 23:39:17,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:17,971 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-16 23:39:17,971 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;@667612ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-16 23:39:17,972 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-16 23:39:18,212 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-16 23:39:18,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:18,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1669235015, now seen corresponding path program 1 times [2024-10-16 23:39:18,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:18,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590943192] [2024-10-16 23:39:18,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:18,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:18,271 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-16 23:39:18,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:18,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590943192] [2024-10-16 23:39:18,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590943192] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:18,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:18,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-16 23:39:18,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662837786] [2024-10-16 23:39:18,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:18,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-16 23:39:18,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:18,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-16 23:39:18,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-16 23:39:18,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:18,275 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:18,275 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) [2024-10-16 23:39:18,275 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:18,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:18,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-16 23:39:18,326 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-16 23:39:18,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:18,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1956447449, now seen corresponding path program 1 times [2024-10-16 23:39:18,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:18,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274689101] [2024-10-16 23:39:18,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:18,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:18,388 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-16 23:39:18,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:18,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274689101] [2024-10-16 23:39:18,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274689101] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:18,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:18,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:18,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883955594] [2024-10-16 23:39:18,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:18,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:18,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:18,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:18,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:18,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:18,391 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:18,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2024-10-16 23:39:18,392 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:18,392 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:18,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:18,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:18,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-16 23:39:18,473 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-16 23:39:18,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:18,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1812213301, now seen corresponding path program 1 times [2024-10-16 23:39:18,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:18,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493195583] [2024-10-16 23:39:18,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:18,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:18,539 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-16 23:39:18,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:18,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493195583] [2024-10-16 23:39:18,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493195583] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:18,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:18,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:18,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63435529] [2024-10-16 23:39:18,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:18,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:18,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:18,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:18,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:18,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:18,540 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:18,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2024-10-16 23:39:18,541 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:18,541 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:18,541 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:18,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:18,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:18,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:18,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-16 23:39:18,607 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-16 23:39:18,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:18,607 INFO L85 PathProgramCache]: Analyzing trace with hash -313022064, now seen corresponding path program 1 times [2024-10-16 23:39:18,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:18,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713998957] [2024-10-16 23:39:18,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:18,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-16 23:39:18,618 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-16 23:39:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-16 23:39:18,637 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-16 23:39:18,638 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-16 23:39:18,639 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-10-16 23:39:18,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-16 23:39:18,641 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-16 23:39:18,642 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (1/3) [2024-10-16 23:39:18,642 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-16 23:39:18,642 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-16 23:39:18,656 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-16 23:39:18,658 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-16 23:39:18,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-16 23:39:18,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-16 23:39:18,665 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) [2024-10-16 23:39:18,666 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 [2024-10-16 23:39:18,696 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-16 23:39:18,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:18,697 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread3of3ForFork0 ======== [2024-10-16 23:39:18,698 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;@667612ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-16 23:39:18,699 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-16 23:39:19,014 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-16 23:39:19,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:19,016 INFO L85 PathProgramCache]: Analyzing trace with hash -310151672, now seen corresponding path program 1 times [2024-10-16 23:39:19,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:19,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865663405] [2024-10-16 23:39:19,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:19,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:19,071 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-16 23:39:19,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:19,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865663405] [2024-10-16 23:39:19,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865663405] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:19,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:19,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-16 23:39:19,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402837854] [2024-10-16 23:39:19,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:19,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-16 23:39:19,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:19,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-16 23:39:19,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-16 23:39:19,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:19,076 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:19,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-10-16 23:39:19,076 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:19,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:19,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-16 23:39:19,386 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-16 23:39:19,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:19,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1725765969, now seen corresponding path program 1 times [2024-10-16 23:39:19,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:19,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50943748] [2024-10-16 23:39:19,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:19,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:19,440 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-16 23:39:19,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:19,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50943748] [2024-10-16 23:39:19,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50943748] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:19,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:19,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:19,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616142688] [2024-10-16 23:39:19,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:19,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:19,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:19,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:19,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:19,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:19,443 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:19,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2024-10-16 23:39:19,443 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:19,443 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:19,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:19,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:19,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-16 23:39:19,596 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-16 23:39:19,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:19,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1725766992, now seen corresponding path program 1 times [2024-10-16 23:39:19,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:19,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634185621] [2024-10-16 23:39:19,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:19,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:19,644 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-16 23:39:19,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:19,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634185621] [2024-10-16 23:39:19,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634185621] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:19,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:19,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:19,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325171018] [2024-10-16 23:39:19,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:19,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:19,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:19,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:19,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:19,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:19,647 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:19,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2024-10-16 23:39:19,648 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:19,648 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:19,648 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:20,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:20,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:20,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:20,160 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-16 23:39:20,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-16 23:39:20,161 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-16 23:39:20,162 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread3of3ForFork0 was SAFE (1/4) [2024-10-16 23:39:20,163 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-16 23:39:20,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-16 23:39:20,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-16 23:39:20,168 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) [2024-10-16 23:39:20,170 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 [2024-10-16 23:39:20,199 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-16 23:39:20,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:20,199 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-16 23:39:20,200 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;@667612ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-16 23:39:20,200 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-16 23:39:20,454 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-16 23:39:20,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:20,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1253506056, now seen corresponding path program 1 times [2024-10-16 23:39:20,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:20,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887102202] [2024-10-16 23:39:20,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:20,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-16 23:39:20,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:20,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887102202] [2024-10-16 23:39:20,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887102202] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:20,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:20,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-16 23:39:20,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885766752] [2024-10-16 23:39:20,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:20,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-16 23:39:20,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:20,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-16 23:39:20,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-16 23:39:20,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:20,481 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:20,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2024-10-16 23:39:20,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:20,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-16 23:39:20,561 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-16 23:39:20,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:20,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1392201306, now seen corresponding path program 1 times [2024-10-16 23:39:20,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:20,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779511887] [2024-10-16 23:39:20,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:20,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:20,609 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-16 23:39:20,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:20,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779511887] [2024-10-16 23:39:20,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779511887] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:20,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:20,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:20,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89390524] [2024-10-16 23:39:20,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:20,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:20,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:20,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:20,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:20,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:20,610 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:20,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-10-16 23:39:20,610 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:20,610 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:20,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:20,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:20,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-16 23:39:20,679 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-16 23:39:20,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:20,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1952164404, now seen corresponding path program 1 times [2024-10-16 23:39:20,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:20,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007897569] [2024-10-16 23:39:20,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:20,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-16 23:39:20,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:20,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007897569] [2024-10-16 23:39:20,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007897569] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:20,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:20,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:20,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335002149] [2024-10-16 23:39:20,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:20,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:20,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:20,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:20,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:20,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:20,713 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:20,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 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) [2024-10-16 23:39:20,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:20,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:20,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:20,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:20,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:20,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:20,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-16 23:39:20,780 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-16 23:39:20,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:20,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1535750159, now seen corresponding path program 1 times [2024-10-16 23:39:20,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:20,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734155054] [2024-10-16 23:39:20,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:20,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:20,818 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-16 23:39:20,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:20,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734155054] [2024-10-16 23:39:20,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734155054] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:20,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:20,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:20,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787787044] [2024-10-16 23:39:20,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:20,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:20,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:20,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:20,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:20,820 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:20,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2024-10-16 23:39:20,820 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:20,820 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:20,820 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:20,820 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:20,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:20,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:20,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:20,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:20,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-16 23:39:20,872 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-16 23:39:20,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:20,873 INFO L85 PathProgramCache]: Analyzing trace with hash 394629777, now seen corresponding path program 1 times [2024-10-16 23:39:20,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:20,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3824326] [2024-10-16 23:39:20,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:20,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-16 23:39:20,880 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-16 23:39:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-16 23:39:20,889 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-16 23:39:20,889 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-16 23:39:20,889 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-10-16 23:39:20,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-16 23:39:20,891 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-16 23:39:20,891 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (2/4) [2024-10-16 23:39:20,891 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-16 23:39:20,891 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-16 23:39:20,903 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-16 23:39:20,904 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-16 23:39:20,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-16 23:39:20,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-16 23:39:20,906 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) [2024-10-16 23:39:20,907 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 [2024-10-16 23:39:20,935 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-16 23:39:20,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:20,936 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread3of4ForFork0 ======== [2024-10-16 23:39:20,936 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;@667612ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-16 23:39:20,936 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-16 23:39:21,236 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-16 23:39:21,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:21,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1439665154, now seen corresponding path program 1 times [2024-10-16 23:39:21,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:21,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162951608] [2024-10-16 23:39:21,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:21,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:21,264 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-16 23:39:21,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:21,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162951608] [2024-10-16 23:39:21,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162951608] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:21,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:21,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-16 23:39:21,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195333991] [2024-10-16 23:39:21,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:21,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-16 23:39:21,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:21,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-16 23:39:21,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-16 23:39:21,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:21,266 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:21,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-10-16 23:39:21,267 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:21,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:21,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-16 23:39:21,546 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-16 23:39:21,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:21,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1818155065, now seen corresponding path program 1 times [2024-10-16 23:39:21,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:21,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150389155] [2024-10-16 23:39:21,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:21,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:21,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-16 23:39:21,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:21,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150389155] [2024-10-16 23:39:21,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150389155] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:21,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:21,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:21,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788855847] [2024-10-16 23:39:21,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:21,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:21,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:21,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:21,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:21,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:21,588 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:21,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2024-10-16 23:39:21,589 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:21,589 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:21,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:21,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:21,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-16 23:39:21,871 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-16 23:39:21,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:21,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1818154042, now seen corresponding path program 1 times [2024-10-16 23:39:21,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:21,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973535208] [2024-10-16 23:39:21,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:21,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:21,910 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-16 23:39:21,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:21,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973535208] [2024-10-16 23:39:21,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973535208] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:21,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:21,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:21,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325767475] [2024-10-16 23:39:21,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:21,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:21,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:21,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:21,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:21,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:21,912 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:21,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2024-10-16 23:39:21,912 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:21,912 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:21,912 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:23,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:23,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:23,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:23,045 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-16 23:39:23,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-16 23:39:23,047 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-16 23:39:23,047 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread3of4ForFork0 was SAFE (1/5) [2024-10-16 23:39:23,048 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-16 23:39:23,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-16 23:39:23,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-16 23:39:23,054 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) [2024-10-16 23:39:23,055 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 [2024-10-16 23:39:23,081 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-16 23:39:23,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:23,082 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread4of4ForFork0 ======== [2024-10-16 23:39:23,082 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;@667612ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-16 23:39:23,083 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-16 23:39:23,437 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-16 23:39:23,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:23,438 INFO L85 PathProgramCache]: Analyzing trace with hash -566652574, now seen corresponding path program 1 times [2024-10-16 23:39:23,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:23,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282902837] [2024-10-16 23:39:23,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:23,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:23,461 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-16 23:39:23,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:23,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282902837] [2024-10-16 23:39:23,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282902837] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:23,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:23,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-16 23:39:23,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415574124] [2024-10-16 23:39:23,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:23,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-16 23:39:23,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:23,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-16 23:39:23,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-16 23:39:23,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:23,462 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:23,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-10-16 23:39:23,462 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:23,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:23,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-16 23:39:23,787 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-16 23:39:23,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:23,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1602722462, now seen corresponding path program 1 times [2024-10-16 23:39:23,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:23,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100019808] [2024-10-16 23:39:23,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:23,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:23,861 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-16 23:39:23,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:23,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100019808] [2024-10-16 23:39:23,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100019808] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:23,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:23,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:23,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309828776] [2024-10-16 23:39:23,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:23,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:23,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:23,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:23,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:23,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:23,863 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:23,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2024-10-16 23:39:23,864 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:23,864 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:23,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:23,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:23,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-16 23:39:23,966 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-16 23:39:23,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:23,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1602723485, now seen corresponding path program 1 times [2024-10-16 23:39:23,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:23,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868153619] [2024-10-16 23:39:23,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:23,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:24,002 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-16 23:39:24,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:24,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868153619] [2024-10-16 23:39:24,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868153619] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:24,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:24,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:24,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478744164] [2024-10-16 23:39:24,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:24,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:24,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:24,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:24,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:24,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:24,005 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:24,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2024-10-16 23:39:24,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:24,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:24,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:25,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:25,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:25,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:25,114 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-16 23:39:25,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-16 23:39:25,115 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-16 23:39:25,116 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread4of4ForFork0 was SAFE (2/5) [2024-10-16 23:39:25,120 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-16 23:39:25,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-16 23:39:25,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-16 23:39:25,122 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) [2024-10-16 23:39:25,123 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 [2024-10-16 23:39:25,150 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-16 23:39:25,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:25,151 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of4ForFork0 ======== [2024-10-16 23:39:25,151 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@667612ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-16 23:39:25,151 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-16 23:39:25,297 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-16 23:39:25,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:25,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1266556195, now seen corresponding path program 1 times [2024-10-16 23:39:25,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:25,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957142389] [2024-10-16 23:39:25,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:25,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:25,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-16 23:39:25,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:25,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957142389] [2024-10-16 23:39:25,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957142389] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:25,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:25,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:25,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999371282] [2024-10-16 23:39:25,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:25,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:25,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:25,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:25,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:25,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:25,323 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:25,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-10-16 23:39:25,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:27,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:27,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-16 23:39:27,013 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-16 23:39:27,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:27,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1266555172, now seen corresponding path program 1 times [2024-10-16 23:39:27,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:27,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179418143] [2024-10-16 23:39:27,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:27,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:27,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-16 23:39:27,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:27,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179418143] [2024-10-16 23:39:27,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179418143] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:27,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:27,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:27,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830677051] [2024-10-16 23:39:27,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:27,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:27,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:27,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:27,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:27,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:27,130 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:27,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-10-16 23:39:27,131 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:27,131 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:29,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:29,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:29,363 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-16 23:39:29,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-16 23:39:29,365 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-16 23:39:29,365 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread1of4ForFork0 was SAFE (3/5) [2024-10-16 23:39:29,368 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-16 23:39:29,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-16 23:39:29,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-16 23:39:29,370 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) [2024-10-16 23:39:29,371 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 [2024-10-16 23:39:29,403 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-16 23:39:29,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:29,404 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread2of4ForFork0 ======== [2024-10-16 23:39:29,404 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;@667612ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-16 23:39:29,404 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-16 23:39:29,654 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-16 23:39:29,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:29,655 INFO L85 PathProgramCache]: Analyzing trace with hash -39219039, now seen corresponding path program 1 times [2024-10-16 23:39:29,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:29,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034672126] [2024-10-16 23:39:29,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:29,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:29,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-16 23:39:29,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:29,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034672126] [2024-10-16 23:39:29,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034672126] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:29,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:29,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-16 23:39:29,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051645722] [2024-10-16 23:39:29,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:29,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-16 23:39:29,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:29,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-16 23:39:29,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-16 23:39:29,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:29,679 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:29,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2024-10-16 23:39:29,679 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:29,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:29,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-16 23:39:29,939 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-16 23:39:29,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:29,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1445171864, now seen corresponding path program 1 times [2024-10-16 23:39:29,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:29,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771734189] [2024-10-16 23:39:29,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:29,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:29,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-16 23:39:29,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:29,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771734189] [2024-10-16 23:39:29,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771734189] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:29,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:29,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:29,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182769068] [2024-10-16 23:39:29,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:29,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:29,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:29,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:29,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:29,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:29,970 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:29,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2024-10-16 23:39:29,970 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:29,970 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:30,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:30,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:30,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-16 23:39:30,440 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-16 23:39:30,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:30,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1445172887, now seen corresponding path program 1 times [2024-10-16 23:39:30,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:30,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136941167] [2024-10-16 23:39:30,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:30,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:30,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-16 23:39:30,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:30,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136941167] [2024-10-16 23:39:30,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136941167] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:30,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:30,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:30,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167081683] [2024-10-16 23:39:30,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:30,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:30,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:30,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:30,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:30,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:30,472 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:30,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2024-10-16 23:39:30,473 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:30,473 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:30,473 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:31,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:31,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:31,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:31,308 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-16 23:39:31,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-16 23:39:31,310 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-16 23:39:31,310 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread2of4ForFork0 was SAFE (4/5) [2024-10-16 23:39:31,311 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-16 23:39:31,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-16 23:39:31,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-16 23:39:31,313 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) [2024-10-16 23:39:31,314 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 [2024-10-16 23:39:31,341 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-16 23:39:31,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:31,341 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-16 23:39:31,342 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;@667612ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-16 23:39:31,342 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-16 23:39:31,626 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-16 23:39:31,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:31,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1924826572, now seen corresponding path program 1 times [2024-10-16 23:39:31,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:31,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071709531] [2024-10-16 23:39:31,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:31,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:31,650 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-16 23:39:31,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:31,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071709531] [2024-10-16 23:39:31,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071709531] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:31,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:31,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-16 23:39:31,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241463519] [2024-10-16 23:39:31,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:31,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-16 23:39:31,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:31,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-16 23:39:31,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-16 23:39:31,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:31,652 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:31,652 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) [2024-10-16 23:39:31,652 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:31,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:31,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-16 23:39:31,780 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-16 23:39:31,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:31,781 INFO L85 PathProgramCache]: Analyzing trace with hash -414837866, now seen corresponding path program 1 times [2024-10-16 23:39:31,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:31,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102690671] [2024-10-16 23:39:31,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:31,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:31,805 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-16 23:39:31,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:31,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102690671] [2024-10-16 23:39:31,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102690671] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:31,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:31,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:31,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191761728] [2024-10-16 23:39:31,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:31,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:31,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:31,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:31,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:31,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:31,807 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:31,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2024-10-16 23:39:31,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:31,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:31,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:31,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:31,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-16 23:39:31,864 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-16 23:39:31,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:31,864 INFO L85 PathProgramCache]: Analyzing trace with hash -245489912, now seen corresponding path program 1 times [2024-10-16 23:39:31,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:31,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797028339] [2024-10-16 23:39:31,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:31,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:31,896 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-16 23:39:31,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:31,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797028339] [2024-10-16 23:39:31,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797028339] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:31,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:31,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:31,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799420593] [2024-10-16 23:39:31,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:31,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:31,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:31,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:31,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:31,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:31,898 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:31,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2024-10-16 23:39:31,898 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:31,898 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:31,898 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:31,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:31,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:31,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:31,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-16 23:39:31,986 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-16 23:39:31,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:31,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1024695042, now seen corresponding path program 1 times [2024-10-16 23:39:31,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:31,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467497632] [2024-10-16 23:39:31,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:31,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:32,021 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-16 23:39:32,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:32,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467497632] [2024-10-16 23:39:32,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467497632] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:32,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:32,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:32,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853034388] [2024-10-16 23:39:32,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:32,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:32,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:32,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:32,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:32,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:32,024 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:32,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2024-10-16 23:39:32,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:32,025 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:32,025 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:32,025 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:32,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:32,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:32,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:32,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:32,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-10-16 23:39:32,098 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-16 23:39:32,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:32,098 INFO L85 PathProgramCache]: Analyzing trace with hash -446032008, now seen corresponding path program 1 times [2024-10-16 23:39:32,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:32,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967236696] [2024-10-16 23:39:32,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:32,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-16 23:39:32,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:32,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967236696] [2024-10-16 23:39:32,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967236696] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:32,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:32,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:32,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499494869] [2024-10-16 23:39:32,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:32,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:32,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:32,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:32,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:32,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:32,139 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:32,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2024-10-16 23:39:32,139 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:32,139 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:32,139 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:32,139 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:32,140 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:32,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:32,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:32,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:32,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:32,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:32,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-10-16 23:39:32,198 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-16 23:39:32,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:32,199 INFO L85 PathProgramCache]: Analyzing trace with hash -910688130, now seen corresponding path program 1 times [2024-10-16 23:39:32,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:32,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506700096] [2024-10-16 23:39:32,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:32,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-16 23:39:32,208 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-16 23:39:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-16 23:39:32,227 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-16 23:39:32,227 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-16 23:39:32,227 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-10-16 23:39:32,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-10-16 23:39:32,229 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-10-16 23:39:32,230 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (5/5) [2024-10-16 23:39:32,231 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-16 23:39:32,231 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-16 23:39:32,253 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-16 23:39:32,257 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-16 23:39:32,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-16 23:39:32,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-16 23:39:32,263 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) [2024-10-16 23:39:32,264 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 [2024-10-16 23:39:32,292 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-16 23:39:32,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:32,293 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread2of5ForFork0 ======== [2024-10-16 23:39:32,367 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;@667612ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-16 23:39:32,367 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-16 23:39:32,590 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-16 23:39:32,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:32,590 INFO L85 PathProgramCache]: Analyzing trace with hash 615766369, now seen corresponding path program 1 times [2024-10-16 23:39:32,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:32,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82426415] [2024-10-16 23:39:32,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:32,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:32,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-16 23:39:32,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:32,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82426415] [2024-10-16 23:39:32,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82426415] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:32,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:32,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-16 23:39:32,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589818655] [2024-10-16 23:39:32,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:32,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-16 23:39:32,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:32,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-16 23:39:32,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-16 23:39:32,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:32,606 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:32,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2024-10-16 23:39:32,606 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:32,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:32,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-10-16 23:39:32,907 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-16 23:39:32,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:32,908 INFO L85 PathProgramCache]: Analyzing trace with hash 553412742, now seen corresponding path program 1 times [2024-10-16 23:39:32,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:32,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152456403] [2024-10-16 23:39:32,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:32,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:32,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-16 23:39:32,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:32,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152456403] [2024-10-16 23:39:32,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152456403] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:32,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:32,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:32,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777717967] [2024-10-16 23:39:32,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:32,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:32,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:32,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:32,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:32,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:32,929 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:32,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2024-10-16 23:39:32,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:32,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:33,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:33,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:33,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-10-16 23:39:33,512 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-16 23:39:33,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:33,513 INFO L85 PathProgramCache]: Analyzing trace with hash 553413765, now seen corresponding path program 1 times [2024-10-16 23:39:33,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:33,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080986624] [2024-10-16 23:39:33,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:33,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:33,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-16 23:39:33,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:33,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080986624] [2024-10-16 23:39:33,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080986624] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:33,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:33,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:33,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997698270] [2024-10-16 23:39:33,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:33,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:33,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:33,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:33,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:33,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:33,534 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:33,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2024-10-16 23:39:33,534 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:33,534 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:33,534 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:36,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-16 23:39:36,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:36,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:36,917 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-16 23:39:36,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-10-16 23:39:36,918 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-16 23:39:36,919 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread2of5ForFork0 was SAFE (1/6) [2024-10-16 23:39:36,919 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-16 23:39:36,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-16 23:39:36,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-16 23:39:36,926 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) [2024-10-16 23:39:36,927 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 [2024-10-16 23:39:36,954 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-16 23:39:36,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:36,955 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of5ForFork0 ======== [2024-10-16 23:39:36,955 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;@667612ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-16 23:39:36,955 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-16 23:39:37,123 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-16 23:39:37,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:37,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2041604015, now seen corresponding path program 1 times [2024-10-16 23:39:37,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:37,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11444624] [2024-10-16 23:39:37,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:37,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:37,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-16 23:39:37,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:37,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11444624] [2024-10-16 23:39:37,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11444624] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:37,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:37,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:37,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339120995] [2024-10-16 23:39:37,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:37,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:37,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:37,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:37,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:37,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:37,141 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:37,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-10-16 23:39:37,142 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:52,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:52,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-10-16 23:39:52,033 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-16 23:39:52,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-16 23:39:52,033 INFO L85 PathProgramCache]: Analyzing trace with hash -2041602992, now seen corresponding path program 1 times [2024-10-16 23:39:52,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-16 23:39:52,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118663710] [2024-10-16 23:39:52,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-16 23:39:52,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-16 23:39:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-16 23:39:52,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-16 23:39:52,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-16 23:39:52,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118663710] [2024-10-16 23:39:52,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118663710] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-16 23:39:52,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-16 23:39:52,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-16 23:39:52,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196558514] [2024-10-16 23:39:52,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-16 23:39:52,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-16 23:39:52,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-16 23:39:52,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-16 23:39:52,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-16 23:39:52,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-16 23:39:52,075 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-16 23:39:52,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-10-16 23:39:52,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-16 23:39:52,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.