./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/31_simple_loop5_vs-pthread.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_WITH_CONTEXT -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/31_simple_loop5_vs-pthread.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 389f5b7d6579b5ac06564f3c82f3f69fea502868b761df6187d49f96e1a317cd --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_WITH_CONTEXT -tc /storage/repos/ultimate/releaseScripts/default/benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.conditional-comm-b86fb0b-m [2024-10-17 03:11:29,616 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-17 03:11:29,668 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-10-17 03:11:29,671 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-17 03:11:29,671 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-17 03:11:29,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-17 03:11:29,685 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-17 03:11:29,686 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-17 03:11:29,686 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-17 03:11:29,687 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-17 03:11:29,687 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-17 03:11:29,688 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-17 03:11:29,688 INFO L153 SettingsManager]: * Use SBE=true [2024-10-17 03:11:29,688 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-17 03:11:29,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-17 03:11:29,690 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-17 03:11:29,690 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-17 03:11:29,690 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-17 03:11:29,690 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-17 03:11:29,691 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-17 03:11:29,691 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-17 03:11:29,691 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-17 03:11:29,691 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-17 03:11:29,692 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-17 03:11:29,692 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-17 03:11:29,692 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-17 03:11:29,692 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-17 03:11:29,692 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-17 03:11:29,692 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-17 03:11:29,693 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-17 03:11:29,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-17 03:11:29,693 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-17 03:11:29,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-17 03:11:29,693 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-10-17 03:11:29,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-17 03:11:29,693 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-17 03:11:29,694 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-10-17 03:11:29,694 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-17 03:11:29,694 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-17 03:11:29,694 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-10-17 03:11:29,694 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-10-17 03:11:29,694 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 -> 389f5b7d6579b5ac06564f3c82f3f69fea502868b761df6187d49f96e1a317cd 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_WITH_CONTEXT [2024-10-17 03:11:29,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-17 03:11:29,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-17 03:11:29,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-17 03:11:29,951 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-17 03:11:29,951 INFO L274 PluginConnector]: CDTParser initialized [2024-10-17 03:11:29,952 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread-ext/31_simple_loop5_vs-pthread.i [2024-10-17 03:11:31,116 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-17 03:11:31,317 INFO L384 CDTParser]: Found 1 translation units. [2024-10-17 03:11:31,318 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/31_simple_loop5_vs-pthread.i [2024-10-17 03:11:31,331 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/09c84aff8/5d422782050040d9adf55abef86e65f1/FLAG43d79eb5e [2024-10-17 03:11:31,687 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/09c84aff8/5d422782050040d9adf55abef86e65f1 [2024-10-17 03:11:31,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-17 03:11:31,690 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-17 03:11:31,691 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-17 03:11:31,691 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-17 03:11:31,694 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-17 03:11:31,695 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 03:11:31" (1/1) ... [2024-10-17 03:11:31,695 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ca9de1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 03:11:31, skipping insertion in model container [2024-10-17 03:11:31,696 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 03:11:31" (1/1) ... [2024-10-17 03:11:31,721 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-17 03:11:31,968 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/31_simple_loop5_vs-pthread.i[30648,30661] [2024-10-17 03:11:31,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-17 03:11:31,987 INFO L200 MainTranslator]: Completed pre-run [2024-10-17 03:11:32,024 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/31_simple_loop5_vs-pthread.i[30648,30661] [2024-10-17 03:11:32,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-17 03:11:32,056 INFO L204 MainTranslator]: Completed translation [2024-10-17 03:11:32,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 03:11:32 WrapperNode [2024-10-17 03:11:32,057 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-17 03:11:32,058 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-17 03:11:32,058 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-17 03:11:32,058 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-17 03:11:32,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 03:11:32" (1/1) ... [2024-10-17 03:11:32,072 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 03:11:32" (1/1) ... [2024-10-17 03:11:32,086 INFO L138 Inliner]: procedures = 162, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2024-10-17 03:11:32,087 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-17 03:11:32,088 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-17 03:11:32,088 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-17 03:11:32,088 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-17 03:11:32,093 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 03:11:32" (1/1) ... [2024-10-17 03:11:32,093 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 03:11:32" (1/1) ... [2024-10-17 03:11:32,098 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 03:11:32" (1/1) ... [2024-10-17 03:11:32,098 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 03:11:32" (1/1) ... [2024-10-17 03:11:32,101 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 03:11:32" (1/1) ... [2024-10-17 03:11:32,103 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 03:11:32" (1/1) ... [2024-10-17 03:11:32,104 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 03:11:32" (1/1) ... [2024-10-17 03:11:32,105 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 03:11:32" (1/1) ... [2024-10-17 03:11:32,106 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-17 03:11:32,107 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-17 03:11:32,110 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-17 03:11:32,111 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-17 03:11:32,111 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 03:11:32" (1/1) ... [2024-10-17 03:11:32,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-17 03:11:32,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 03:11:32,144 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-10-17 03:11:32,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-10-17 03:11:32,179 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-10-17 03:11:32,180 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-10-17 03:11:32,180 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-17 03:11:32,180 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-17 03:11:32,180 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-17 03:11:32,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-17 03:11:32,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-17 03:11:32,180 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-17 03:11:32,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-17 03:11:32,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-17 03:11:32,181 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-17 03:11:32,300 INFO L238 CfgBuilder]: Building ICFG [2024-10-17 03:11:32,303 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-17 03:11:32,381 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-17 03:11:32,381 INFO L287 CfgBuilder]: Performing block encoding [2024-10-17 03:11:32,462 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-17 03:11:32,462 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-17 03:11:32,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 03:11:32 BoogieIcfgContainer [2024-10-17 03:11:32,463 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-17 03:11:32,467 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-17 03:11:32,468 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-17 03:11:32,470 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-17 03:11:32,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 03:11:31" (1/3) ... [2024-10-17 03:11:32,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2692eb5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 03:11:32, skipping insertion in model container [2024-10-17 03:11:32,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 03:11:32" (2/3) ... [2024-10-17 03:11:32,472 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2692eb5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 03:11:32, skipping insertion in model container [2024-10-17 03:11:32,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 03:11:32" (3/3) ... [2024-10-17 03:11:32,473 INFO L112 eAbstractionObserver]: Analyzing ICFG 31_simple_loop5_vs-pthread.i [2024-10-17 03:11:32,486 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-17 03:11:32,486 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-17 03:11:32,486 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-17 03:11:32,513 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-17 03:11:32,544 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 03:11:32,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 03:11:32,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 03:11:32,545 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 03:11:32,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-10-17 03:11:32,603 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 03:11:32,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:32,615 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork1 ======== [2024-10-17 03:11:32,619 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;@67ebf263, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR_WITH_CONTEXT, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 03:11:32,619 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 03:11:32,773 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 03:11:32,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:32,776 INFO L85 PathProgramCache]: Analyzing trace with hash 523244681, now seen corresponding path program 1 times [2024-10-17 03:11:32,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 03:11:32,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019931513] [2024-10-17 03:11:32,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:32,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 03:11:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 03:11:33,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 03:11:33,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 03:11:33,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019931513] [2024-10-17 03:11:33,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019931513] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 03:11:33,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 03:11:33,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 03:11:33,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090879086] [2024-10-17 03:11:33,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 03:11:33,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 03:11:33,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 03:11:33,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 03:11:33,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 03:11:33,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:33,033 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 03:11:33,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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) [2024-10-17 03:11:33,034 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:33,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:33,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-17 03:11:33,327 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 03:11:33,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:33,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1867715075, now seen corresponding path program 1 times [2024-10-17 03:11:33,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 03:11:33,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165355229] [2024-10-17 03:11:33,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:33,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 03:11:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 03:11:33,519 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-17 03:11:33,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 03:11:33,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165355229] [2024-10-17 03:11:33,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165355229] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 03:11:33,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253141765] [2024-10-17 03:11:33,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:33,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 03:11:33,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 03:11:33,522 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 03:11:33,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-17 03:11:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 03:11:33,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-17 03:11:33,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 03:11:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-17 03:11:33,740 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 03:11:33,806 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-17 03:11:33,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253141765] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 03:11:33,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 03:11:33,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-10-17 03:11:33,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128971266] [2024-10-17 03:11:33,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 03:11:33,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-17 03:11:33,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 03:11:33,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-17 03:11:33,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-17 03:11:33,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:33,810 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 03:11:33,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 03:11:33,810 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:33,810 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:33,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:33,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 03:11:33,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-17 03:11:34,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-10-17 03:11:34,124 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 03:11:34,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:34,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1945943277, now seen corresponding path program 2 times [2024-10-17 03:11:34,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 03:11:34,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102304286] [2024-10-17 03:11:34,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:34,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 03:11:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 03:11:34,263 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 16 proven. 44 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-17 03:11:34,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 03:11:34,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102304286] [2024-10-17 03:11:34,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102304286] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 03:11:34,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567651228] [2024-10-17 03:11:34,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-17 03:11:34,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 03:11:34,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 03:11:34,267 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 03:11:34,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-17 03:11:34,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-17 03:11:34,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 03:11:34,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-17 03:11:34,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 03:11:34,529 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-17 03:11:34,530 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 03:11:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-17 03:11:34,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567651228] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 03:11:34,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 03:11:34,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2024-10-17 03:11:34,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760923240] [2024-10-17 03:11:34,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 03:11:34,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-17 03:11:34,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 03:11:34,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-17 03:11:34,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-17 03:11:34,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:34,631 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 03:11:34,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 03:11:34,631 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:34,631 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-17 03:11:34,631 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:35,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:35,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 03:11:35,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 03:11:35,109 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-17 03:11:35,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-17 03:11:35,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 03:11:35,321 INFO L414 BasicCegarLoop]: Path program histogram: [2, 1] [2024-10-17 03:11:35,322 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork1 was SAFE (1/2) [2024-10-17 03:11:35,328 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 03:11:35,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 03:11:35,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 03:11:35,329 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) [2024-10-17 03:11:35,330 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 [2024-10-17 03:11:35,358 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 03:11:35,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:35,359 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-17 03:11:35,360 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;@67ebf263, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR_WITH_CONTEXT, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 03:11:35,360 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-17 03:11:35,487 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 03:11:35,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:35,487 INFO L85 PathProgramCache]: Analyzing trace with hash 127183947, now seen corresponding path program 1 times [2024-10-17 03:11:35,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 03:11:35,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697844243] [2024-10-17 03:11:35,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:35,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 03:11:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 03:11:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 03:11:35,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 03:11:35,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697844243] [2024-10-17 03:11:35,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697844243] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 03:11:35,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 03:11:35,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 03:11:35,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828660508] [2024-10-17 03:11:35,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 03:11:35,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 03:11:35,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 03:11:35,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 03:11:35,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 03:11:35,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:35,515 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 03:11:35,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 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) [2024-10-17 03:11:35,515 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:35,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:35,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-17 03:11:35,601 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 03:11:35,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:35,601 INFO L85 PathProgramCache]: Analyzing trace with hash -185311428, now seen corresponding path program 1 times [2024-10-17 03:11:35,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 03:11:35,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907901870] [2024-10-17 03:11:35,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:35,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 03:11:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 03:11:35,616 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-17 03:11:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 03:11:35,643 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-17 03:11:35,643 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-17 03:11:35,643 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-17 03:11:35,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-10-17 03:11:35,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-17 03:11:35,646 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-17 03:11:35,648 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (2/2) [2024-10-17 03:11:35,649 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-17 03:11:35,649 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-17 03:11:35,662 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-17 03:11:35,663 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 03:11:35,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 03:11:35,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 03:11:35,665 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) [2024-10-17 03:11:35,668 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 [2024-10-17 03:11:35,702 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 03:11:35,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:35,703 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-17 03:11:35,703 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;@67ebf263, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR_WITH_CONTEXT, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 03:11:35,703 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-17 03:11:36,120 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 03:11:36,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:36,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1157760944, now seen corresponding path program 1 times [2024-10-17 03:11:36,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 03:11:36,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428498855] [2024-10-17 03:11:36,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:36,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 03:11:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 03:11:36,150 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-17 03:11:36,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 03:11:36,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428498855] [2024-10-17 03:11:36,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428498855] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 03:11:36,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 03:11:36,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 03:11:36,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761198629] [2024-10-17 03:11:36,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 03:11:36,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 03:11:36,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 03:11:36,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 03:11:36,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 03:11:36,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:36,151 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 03:11:36,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 03:11:36,152 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:36,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:36,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-17 03:11:36,286 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 03:11:36,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:36,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1735413378, now seen corresponding path program 1 times [2024-10-17 03:11:36,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 03:11:36,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895071115] [2024-10-17 03:11:36,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:36,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 03:11:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 03:11:36,347 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-17 03:11:36,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 03:11:36,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895071115] [2024-10-17 03:11:36,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895071115] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 03:11:36,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241934676] [2024-10-17 03:11:36,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:36,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 03:11:36,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 03:11:36,350 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 03:11:36,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-17 03:11:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 03:11:36,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-17 03:11:36,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 03:11:36,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-17 03:11:36,449 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-17 03:11:36,450 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-17 03:11:36,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241934676] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 03:11:36,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-17 03:11:36,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-17 03:11:36,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848459290] [2024-10-17 03:11:36,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 03:11:36,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 03:11:36,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 03:11:36,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 03:11:36,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-17 03:11:36,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:36,452 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 03:11:36,453 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) [2024-10-17 03:11:36,453 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:36,453 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:36,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:36,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:36,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-17 03:11:36,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 03:11:36,679 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 03:11:36,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:36,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1897934520, now seen corresponding path program 1 times [2024-10-17 03:11:36,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 03:11:36,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767306372] [2024-10-17 03:11:36,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:36,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 03:11:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 03:11:36,745 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-17 03:11:36,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 03:11:36,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767306372] [2024-10-17 03:11:36,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767306372] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 03:11:36,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938535773] [2024-10-17 03:11:36,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:36,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 03:11:36,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 03:11:36,747 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 03:11:36,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-17 03:11:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 03:11:36,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-17 03:11:36,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 03:11:36,884 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-17 03:11:36,884 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 03:11:36,924 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-17 03:11:36,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938535773] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 03:11:36,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 03:11:36,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-10-17 03:11:36,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242972485] [2024-10-17 03:11:36,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 03:11:36,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-17 03:11:36,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 03:11:36,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-17 03:11:36,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-17 03:11:36,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:36,926 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 03:11:36,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 03:11:36,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:36,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:36,927 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:37,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:37,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:37,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 03:11:37,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-17 03:11:37,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-17 03:11:37,212 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 03:11:37,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:37,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1501640379, now seen corresponding path program 1 times [2024-10-17 03:11:37,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 03:11:37,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556261759] [2024-10-17 03:11:37,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:37,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 03:11:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 03:11:37,225 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-17 03:11:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 03:11:37,237 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-17 03:11:37,237 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-17 03:11:37,237 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-17 03:11:37,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-10-17 03:11:37,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-17 03:11:37,239 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-17 03:11:37,239 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (1/3) [2024-10-17 03:11:37,239 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-17 03:11:37,239 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-17 03:11:37,252 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-17 03:11:37,253 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 03:11:37,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 03:11:37,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 03:11:37,255 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 03:11:37,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (9)] Waiting until timeout for monitored process [2024-10-17 03:11:37,284 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 03:11:37,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:37,285 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread3of3ForFork1 ======== [2024-10-17 03:11:37,285 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;@67ebf263, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR_WITH_CONTEXT, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 03:11:37,285 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 03:11:37,286 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-17 03:11:37,287 INFO L414 BasicCegarLoop]: Path program histogram: [] [2024-10-17 03:11:37,287 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread3of3ForFork1 was SAFE (1/4) [2024-10-17 03:11:37,288 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 03:11:37,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 03:11:37,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 03:11:37,290 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) [2024-10-17 03:11:37,291 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 [2024-10-17 03:11:37,320 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 03:11:37,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:37,320 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-17 03:11:37,321 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;@67ebf263, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR_WITH_CONTEXT, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 03:11:37,321 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-17 03:11:38,161 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 03:11:38,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:38,162 INFO L85 PathProgramCache]: Analyzing trace with hash -829354904, now seen corresponding path program 1 times [2024-10-17 03:11:38,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 03:11:38,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707208489] [2024-10-17 03:11:38,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:38,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 03:11:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 03:11:38,199 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-17 03:11:38,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 03:11:38,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707208489] [2024-10-17 03:11:38,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707208489] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 03:11:38,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 03:11:38,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 03:11:38,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632770380] [2024-10-17 03:11:38,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 03:11:38,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 03:11:38,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 03:11:38,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 03:11:38,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 03:11:38,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:38,200 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 03:11:38,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 03:11:38,200 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:38,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:38,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-17 03:11:38,371 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 03:11:38,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:38,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1732788686, now seen corresponding path program 1 times [2024-10-17 03:11:38,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 03:11:38,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108243724] [2024-10-17 03:11:38,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:38,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 03:11:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 03:11:38,439 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-17 03:11:38,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 03:11:38,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108243724] [2024-10-17 03:11:38,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108243724] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 03:11:38,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575857579] [2024-10-17 03:11:38,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:38,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 03:11:38,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 03:11:38,442 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 03:11:38,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-17 03:11:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 03:11:38,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-17 03:11:38,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 03:11:38,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-17 03:11:38,539 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-17 03:11:38,540 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-17 03:11:38,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575857579] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 03:11:38,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-17 03:11:38,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-17 03:11:38,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767779026] [2024-10-17 03:11:38,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 03:11:38,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 03:11:38,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 03:11:38,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 03:11:38,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-17 03:11:38,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:38,541 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 03:11:38,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 03:11:38,541 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:38,541 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:38,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:38,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:38,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-17 03:11:38,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-17 03:11:38,764 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 03:11:38,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:38,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1721330237, now seen corresponding path program 1 times [2024-10-17 03:11:38,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 03:11:38,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339032564] [2024-10-17 03:11:38,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:38,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 03:11:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 03:11:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-17 03:11:38,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 03:11:38,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339032564] [2024-10-17 03:11:38,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339032564] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 03:11:38,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741664257] [2024-10-17 03:11:38,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:38,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 03:11:38,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 03:11:38,811 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 03:11:38,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-17 03:11:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 03:11:38,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-17 03:11:38,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 03:11:38,967 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-17 03:11:38,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 03:11:39,011 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-17 03:11:39,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741664257] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 03:11:39,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 03:11:39,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-10-17 03:11:39,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184427670] [2024-10-17 03:11:39,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 03:11:39,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-17 03:11:39,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 03:11:39,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-17 03:11:39,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-17 03:11:39,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:39,013 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 03:11:39,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 03:11:39,013 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:39,013 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:39,013 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:39,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:39,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:39,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 03:11:39,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-17 03:11:39,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 03:11:39,334 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 03:11:39,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:39,334 INFO L85 PathProgramCache]: Analyzing trace with hash 185073492, now seen corresponding path program 1 times [2024-10-17 03:11:39,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 03:11:39,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26630659] [2024-10-17 03:11:39,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:39,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 03:11:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 03:11:39,407 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-17 03:11:39,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 03:11:39,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26630659] [2024-10-17 03:11:39,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26630659] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 03:11:39,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193800130] [2024-10-17 03:11:39,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:39,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 03:11:39,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 03:11:39,410 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 03:11:39,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-17 03:11:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 03:11:39,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-17 03:11:39,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 03:11:39,600 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-17 03:11:39,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 03:11:39,669 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-17 03:11:39,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193800130] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 03:11:39,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 03:11:39,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2024-10-17 03:11:39,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058764561] [2024-10-17 03:11:39,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 03:11:39,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-17 03:11:39,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 03:11:39,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-17 03:11:39,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-17 03:11:39,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:39,670 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 03:11:39,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 03:11:39,670 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:39,670 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:39,670 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-17 03:11:39,671 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:39,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:39,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:39,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 03:11:39,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 03:11:39,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-17 03:11:40,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-17 03:11:40,006 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 03:11:40,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:40,007 INFO L85 PathProgramCache]: Analyzing trace with hash 884253295, now seen corresponding path program 1 times [2024-10-17 03:11:40,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 03:11:40,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23068938] [2024-10-17 03:11:40,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:40,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 03:11:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 03:11:40,023 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-17 03:11:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 03:11:40,048 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-17 03:11:40,048 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-17 03:11:40,049 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-17 03:11:40,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-10-17 03:11:40,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-17 03:11:40,051 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-17 03:11:40,052 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (2/4) [2024-10-17 03:11:40,052 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-17 03:11:40,053 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-17 03:11:40,074 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-17 03:11:40,077 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 03:11:40,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 03:11:40,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 03:11:40,079 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 03:11:40,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (14)] Waiting until timeout for monitored process [2024-10-17 03:11:40,113 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 03:11:40,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:40,114 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread3of4ForFork1 ======== [2024-10-17 03:11:40,114 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;@67ebf263, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR_WITH_CONTEXT, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 03:11:40,114 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 03:11:40,115 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-17 03:11:40,116 INFO L414 BasicCegarLoop]: Path program histogram: [] [2024-10-17 03:11:40,117 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread3of4ForFork1 was SAFE (1/5) [2024-10-17 03:11:40,118 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 03:11:40,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 03:11:40,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 03:11:40,120 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 03:11:40,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (15)] Waiting until timeout for monitored process [2024-10-17 03:11:40,153 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 03:11:40,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:40,154 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread4of4ForFork1 ======== [2024-10-17 03:11:40,154 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;@67ebf263, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR_WITH_CONTEXT, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 03:11:40,154 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 03:11:40,154 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-17 03:11:40,155 INFO L414 BasicCegarLoop]: Path program histogram: [] [2024-10-17 03:11:40,155 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread4of4ForFork1 was SAFE (2/5) [2024-10-17 03:11:40,163 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 03:11:40,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 03:11:40,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 03:11:40,165 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 03:11:40,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (16)] Waiting until timeout for monitored process [2024-10-17 03:11:40,198 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 03:11:40,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:40,199 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread2of4ForFork1 ======== [2024-10-17 03:11:40,199 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;@67ebf263, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR_WITH_CONTEXT, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 03:11:40,199 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 03:11:40,200 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-17 03:11:40,201 INFO L414 BasicCegarLoop]: Path program histogram: [] [2024-10-17 03:11:40,201 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread2of4ForFork1 was SAFE (3/5) [2024-10-17 03:11:40,203 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 03:11:40,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 03:11:40,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 03:11:40,204 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 03:11:40,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (17)] Waiting until timeout for monitored process [2024-10-17 03:11:40,241 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 03:11:40,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:40,241 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of4ForFork1 ======== [2024-10-17 03:11:40,242 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;@67ebf263, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR_WITH_CONTEXT, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 03:11:40,242 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 03:11:40,442 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 03:11:40,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:40,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1494740253, now seen corresponding path program 1 times [2024-10-17 03:11:40,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 03:11:40,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534036833] [2024-10-17 03:11:40,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:40,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 03:11:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 03:11:40,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 03:11:40,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 03:11:40,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534036833] [2024-10-17 03:11:40,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534036833] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 03:11:40,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 03:11:40,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 03:11:40,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150929477] [2024-10-17 03:11:40,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 03:11:40,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 03:11:40,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 03:11:40,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 03:11:40,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 03:11:40,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:40,468 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 03:11:40,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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) [2024-10-17 03:11:40,468 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:40,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:40,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-17 03:11:40,999 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 03:11:41,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:41,000 INFO L85 PathProgramCache]: Analyzing trace with hash 747286131, now seen corresponding path program 1 times [2024-10-17 03:11:41,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 03:11:41,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616527579] [2024-10-17 03:11:41,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:41,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 03:11:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 03:11:41,065 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-17 03:11:41,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 03:11:41,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616527579] [2024-10-17 03:11:41,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616527579] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 03:11:41,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353957336] [2024-10-17 03:11:41,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:41,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 03:11:41,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 03:11:41,068 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 03:11:41,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-17 03:11:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 03:11:41,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-17 03:11:41,152 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 03:11:41,227 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-17 03:11:41,227 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 03:11:41,261 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-17 03:11:41,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353957336] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 03:11:41,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 03:11:41,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-10-17 03:11:41,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178991573] [2024-10-17 03:11:41,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 03:11:41,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-17 03:11:41,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 03:11:41,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-17 03:11:41,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-17 03:11:41,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:41,262 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 03:11:41,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 03:11:41,263 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:41,263 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:41,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:41,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 03:11:41,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-17 03:11:41,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-17 03:11:41,833 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 03:11:41,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 03:11:41,833 INFO L85 PathProgramCache]: Analyzing trace with hash -97004129, now seen corresponding path program 1 times [2024-10-17 03:11:41,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 03:11:41,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299477277] [2024-10-17 03:11:41,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:41,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 03:11:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 03:11:41,896 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-17 03:11:41,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 03:11:41,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299477277] [2024-10-17 03:11:41,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299477277] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 03:11:41,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391029223] [2024-10-17 03:11:41,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 03:11:41,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 03:11:41,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 03:11:41,898 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 03:11:41,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-17 03:11:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 03:11:41,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-17 03:11:41,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 03:11:42,118 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-17 03:11:42,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 03:11:42,172 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-17 03:11:42,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391029223] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 03:11:42,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 03:11:42,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2024-10-17 03:11:42,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098116180] [2024-10-17 03:11:42,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 03:11:42,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-17 03:11:42,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 03:11:42,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-17 03:11:42,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-17 03:11:42,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 03:11:42,173 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 03:11:42,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 11 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 03:11:42,174 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 03:11:42,174 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-17 03:11:42,174 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.