./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/queue_ok_longest.i --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 273a578a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/queue_ok_longest.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-273a578-m [2024-02-19 14:01:33,765 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 14:01:33,834 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 14:01:33,837 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 14:01:33,838 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 14:01:33,852 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 14:01:33,853 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 14:01:33,853 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 14:01:33,854 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 14:01:33,854 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 14:01:33,854 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 14:01:33,855 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 14:01:33,855 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 14:01:33,855 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 14:01:33,856 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 14:01:33,856 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 14:01:33,856 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 14:01:33,856 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 14:01:33,857 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 14:01:33,857 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 14:01:33,857 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 14:01:33,858 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 14:01:33,858 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 14:01:33,858 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 14:01:33,858 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 14:01:33,859 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 14:01:33,859 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 14:01:33,859 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 14:01:33,860 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 14:01:33,860 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 14:01:33,860 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 14:01:33,861 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 14:01:33,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:01:33,861 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 14:01:33,861 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 14:01:33,862 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 14:01:33,862 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 14:01:33,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 14:01:33,862 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 14:01:33,863 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 14:01:33,863 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 14:01:33,863 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 14:01:33,863 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 14:01:33,864 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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/UAutomizer-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 14:01:34,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 14:01:34,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 14:01:34,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 14:01:34,158 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 14:01:34,159 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 14:01:34,160 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_ok_longest.i [2024-02-19 14:01:35,339 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 14:01:35,562 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 14:01:35,563 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i [2024-02-19 14:01:35,575 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acd6580af/1019187b3f7a46e8a2d6c41b6f5879c6/FLAG742135adc [2024-02-19 14:01:35,584 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acd6580af/1019187b3f7a46e8a2d6c41b6f5879c6 [2024-02-19 14:01:35,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 14:01:35,587 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 14:01:35,588 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 14:01:35,588 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 14:01:35,591 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 14:01:35,592 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:01:35" (1/1) ... [2024-02-19 14:01:35,592 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d2f0eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:35, skipping insertion in model container [2024-02-19 14:01:35,593 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:01:35" (1/1) ... [2024-02-19 14:01:35,626 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 14:01:36,012 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i[43280,43293] [2024-02-19 14:01:36,019 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i[43553,43566] [2024-02-19 14:01:36,026 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:01:36,042 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 14:01:36,097 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i[43280,43293] [2024-02-19 14:01:36,101 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i[43553,43566] [2024-02-19 14:01:36,108 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:01:36,167 INFO L206 MainTranslator]: Completed translation [2024-02-19 14:01:36,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36 WrapperNode [2024-02-19 14:01:36,168 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 14:01:36,169 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 14:01:36,170 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 14:01:36,170 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 14:01:36,175 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,201 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,243 INFO L138 Inliner]: procedures = 275, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 206 [2024-02-19 14:01:36,244 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 14:01:36,245 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 14:01:36,245 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 14:01:36,245 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 14:01:36,254 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,271 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,286 INFO L175 MemorySlicer]: Split 38 memory accesses to 6 slices as follows [2, 5, 24, 3, 2, 2]. 63 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0, 0, 0]. The 15 writes are split as follows [0, 0, 11, 2, 1, 1]. [2024-02-19 14:01:36,293 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,294 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,319 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,322 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,323 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,324 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,326 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 14:01:36,327 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 14:01:36,327 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 14:01:36,327 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 14:01:36,328 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (1/1) ... [2024-02-19 14:01:36,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:01:36,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:01:36,371 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-19 14:01:36,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-19 14:01:36,410 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-02-19 14:01:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-02-19 14:01:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-02-19 14:01:36,412 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-02-19 14:01:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 14:01:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 14:01:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-19 14:01:36,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-19 14:01:36,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-19 14:01:36,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-19 14:01:36,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-19 14:01:36,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-19 14:01:36,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-19 14:01:36,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 14:01:36,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 14:01:36,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 14:01:36,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-19 14:01:36,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-19 14:01:36,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-19 14:01:36,415 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-19 14:01:36,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 14:01:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 14:01:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 14:01:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 14:01:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-19 14:01:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-19 14:01:36,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-19 14:01:36,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 14:01:36,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 14:01:36,419 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-19 14:01:36,539 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 14:01:36,541 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 14:01:36,848 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 14:01:36,849 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 14:01:37,056 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 14:01:37,057 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-02-19 14:01:37,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:01:37 BoogieIcfgContainer [2024-02-19 14:01:37,057 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 14:01:37,059 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 14:01:37,059 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 14:01:37,061 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 14:01:37,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 02:01:35" (1/3) ... [2024-02-19 14:01:37,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a78180d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:01:37, skipping insertion in model container [2024-02-19 14:01:37,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:01:36" (2/3) ... [2024-02-19 14:01:37,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a78180d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:01:37, skipping insertion in model container [2024-02-19 14:01:37,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:01:37" (3/3) ... [2024-02-19 14:01:37,064 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longest.i [2024-02-19 14:01:37,080 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 14:01:37,080 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-02-19 14:01:37,080 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 14:01:37,155 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-19 14:01:37,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 41 transitions, 96 flow [2024-02-19 14:01:37,213 INFO L124 PetriNetUnfolderBase]: 7/39 cut-off events. [2024-02-19 14:01:37,213 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-19 14:01:37,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 39 events. 7/39 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 30. Up to 3 conditions per place. [2024-02-19 14:01:37,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 41 transitions, 96 flow [2024-02-19 14:01:37,222 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 37 transitions, 83 flow [2024-02-19 14:01:37,234 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:01:37,241 INFO L369 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@39546144, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:01:37,242 INFO L370 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-02-19 14:01:37,245 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:01:37,246 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-02-19 14:01:37,246 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-19 14:01:37,246 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:01:37,246 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-19 14:01:37,247 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:01:37,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:01:37,251 INFO L85 PathProgramCache]: Analyzing trace with hash 541883, now seen corresponding path program 1 times [2024-02-19 14:01:37,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:01:37,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354437124] [2024-02-19 14:01:37,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:01:37,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:01:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:01:37,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:37,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:01:37,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354437124] [2024-02-19 14:01:37,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354437124] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:01:37,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:01:37,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 14:01:37,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454090150] [2024-02-19 14:01:37,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:01:37,443 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-02-19 14:01:37,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:01:37,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-02-19 14:01:37,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-02-19 14:01:37,474 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-02-19 14:01:37,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 83 flow. Second operand has 2 states, 2 states have (on average 9.0) 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) [2024-02-19 14:01:37,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:01:37,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-02-19 14:01:37,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:01:37,658 INFO L124 PetriNetUnfolderBase]: 303/522 cut-off events. [2024-02-19 14:01:37,658 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-02-19 14:01:37,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 522 events. 303/522 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2052 event pairs, 209 based on Foata normal form. 16/458 useless extension candidates. Maximal degree in co-relation 914. Up to 485 conditions per place. [2024-02-19 14:01:37,665 INFO L140 encePairwiseOnDemand]: 39/41 looper letters, 26 selfloop transitions, 0 changer transitions 2/33 dead transitions. [2024-02-19 14:01:37,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 131 flow [2024-02-19 14:01:37,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-02-19 14:01:37,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-02-19 14:01:37,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 46 transitions. [2024-02-19 14:01:37,675 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5609756097560976 [2024-02-19 14:01:37,678 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2024-02-19 14:01:37,678 INFO L507 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 131 flow [2024-02-19 14:01:37,678 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) 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) [2024-02-19 14:01:37,678 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:01:37,679 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:01:37,679 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 14:01:37,679 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:01:37,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:01:37,680 INFO L85 PathProgramCache]: Analyzing trace with hash -2030950034, now seen corresponding path program 1 times [2024-02-19 14:01:37,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:01:37,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41395184] [2024-02-19 14:01:37,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:01:37,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:01:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:01:37,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:37,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:01:37,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41395184] [2024-02-19 14:01:37,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41395184] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:01:37,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:01:37,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 14:01:37,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85859321] [2024-02-19 14:01:37,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:01:37,920 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:01:37,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:01:37,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:01:37,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:01:37,923 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-02-19 14:01:37,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:01:37,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:01:37,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-02-19 14:01:37,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:01:38,005 INFO L124 PetriNetUnfolderBase]: 231/444 cut-off events. [2024-02-19 14:01:38,005 INFO L125 PetriNetUnfolderBase]: For 73/107 co-relation queries the response was YES. [2024-02-19 14:01:38,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1309 conditions, 444 events. 231/444 cut-off events. For 73/107 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1813 event pairs, 121 based on Foata normal form. 14/414 useless extension candidates. Maximal degree in co-relation 1074. Up to 413 conditions per place. [2024-02-19 14:01:38,008 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 28 selfloop transitions, 2 changer transitions 9/44 dead transitions. [2024-02-19 14:01:38,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 44 transitions, 259 flow [2024-02-19 14:01:38,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:01:38,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:01:38,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-02-19 14:01:38,012 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5203252032520326 [2024-02-19 14:01:38,012 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2024-02-19 14:01:38,012 INFO L507 AbstractCegarLoop]: Abstraction has has 38 places, 44 transitions, 259 flow [2024-02-19 14:01:38,013 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:01:38,013 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:01:38,014 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:01:38,015 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 14:01:38,016 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:01:38,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:01:38,016 INFO L85 PathProgramCache]: Analyzing trace with hash 2039704393, now seen corresponding path program 1 times [2024-02-19 14:01:38,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:01:38,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228033629] [2024-02-19 14:01:38,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:01:38,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:01:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:01:38,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:38,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:01:38,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228033629] [2024-02-19 14:01:38,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228033629] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:01:38,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:01:38,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-19 14:01:38,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741739070] [2024-02-19 14:01:38,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:01:38,075 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:01:38,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:01:38,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:01:38,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:01:38,076 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-02-19 14:01:38,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 44 transitions, 259 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-02-19 14:01:38,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:01:38,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-02-19 14:01:38,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:01:38,177 INFO L124 PetriNetUnfolderBase]: 246/471 cut-off events. [2024-02-19 14:01:38,178 INFO L125 PetriNetUnfolderBase]: For 110/162 co-relation queries the response was YES. [2024-02-19 14:01:38,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 471 events. 246/471 cut-off events. For 110/162 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1917 event pairs, 121 based on Foata normal form. 0/429 useless extension candidates. Maximal degree in co-relation 1526. Up to 440 conditions per place. [2024-02-19 14:01:38,180 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 34 selfloop transitions, 2 changer transitions 11/52 dead transitions. [2024-02-19 14:01:38,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 52 transitions, 404 flow [2024-02-19 14:01:38,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:01:38,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:01:38,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-02-19 14:01:38,182 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4959349593495935 [2024-02-19 14:01:38,183 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2024-02-19 14:01:38,183 INFO L507 AbstractCegarLoop]: Abstraction has has 40 places, 52 transitions, 404 flow [2024-02-19 14:01:38,183 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-02-19 14:01:38,184 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:01:38,184 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:01:38,184 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-19 14:01:38,184 INFO L432 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:01:38,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:01:38,185 INFO L85 PathProgramCache]: Analyzing trace with hash -453168286, now seen corresponding path program 1 times [2024-02-19 14:01:38,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:01:38,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324925475] [2024-02-19 14:01:38,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:01:38,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:01:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:01:38,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:38,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:01:38,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324925475] [2024-02-19 14:01:38,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324925475] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:01:38,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:01:38,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-19 14:01:38,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352595583] [2024-02-19 14:01:38,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:01:38,318 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:01:38,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:01:38,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:01:38,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:01:38,319 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-02-19 14:01:38,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 52 transitions, 404 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:01:38,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:01:38,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-02-19 14:01:38,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:01:38,386 INFO L124 PetriNetUnfolderBase]: 189/412 cut-off events. [2024-02-19 14:01:38,386 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2024-02-19 14:01:38,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1872 conditions, 412 events. 189/412 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1661 event pairs, 45 based on Foata normal form. 10/394 useless extension candidates. Maximal degree in co-relation 1508. Up to 355 conditions per place. [2024-02-19 14:01:38,388 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 42 selfloop transitions, 3 changer transitions 17/67 dead transitions. [2024-02-19 14:01:38,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 67 transitions, 660 flow [2024-02-19 14:01:38,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:01:38,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:01:38,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-02-19 14:01:38,389 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2024-02-19 14:01:38,390 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2024-02-19 14:01:38,390 INFO L507 AbstractCegarLoop]: Abstraction has has 42 places, 67 transitions, 660 flow [2024-02-19 14:01:38,390 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:01:38,390 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:01:38,390 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:01:38,390 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-19 14:01:38,391 INFO L432 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:01:38,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:01:38,391 INFO L85 PathProgramCache]: Analyzing trace with hash 395729065, now seen corresponding path program 1 times [2024-02-19 14:01:38,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:01:38,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726325362] [2024-02-19 14:01:38,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:01:38,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:01:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:01:38,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:38,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:01:38,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726325362] [2024-02-19 14:01:38,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726325362] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:01:38,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050768935] [2024-02-19 14:01:38,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:01:38,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:01:38,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:01:38,475 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:01:38,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-19 14:01:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:01:38,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-19 14:01:38,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:01:38,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:38,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:01:38,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:38,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050768935] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:01:38,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:01:38,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-02-19 14:01:38,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780545193] [2024-02-19 14:01:38,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:01:38,728 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:01:38,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:01:38,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:01:38,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:01:38,730 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-02-19 14:01:38,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 67 transitions, 660 flow. Second operand has 7 states, 7 states have (on average 11.285714285714286) 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) [2024-02-19 14:01:38,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:01:38,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-02-19 14:01:38,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:01:38,864 INFO L124 PetriNetUnfolderBase]: 219/472 cut-off events. [2024-02-19 14:01:38,865 INFO L125 PetriNetUnfolderBase]: For 462/462 co-relation queries the response was YES. [2024-02-19 14:01:38,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2593 conditions, 472 events. 219/472 cut-off events. For 462/462 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1860 event pairs, 45 based on Foata normal form. 0/444 useless extension candidates. Maximal degree in co-relation 2162. Up to 415 conditions per place. [2024-02-19 14:01:38,868 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 55 selfloop transitions, 5 changer transitions 20/85 dead transitions. [2024-02-19 14:01:38,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 85 transitions, 1009 flow [2024-02-19 14:01:38,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:01:38,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:01:38,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-02-19 14:01:38,874 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4186991869918699 [2024-02-19 14:01:38,876 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2024-02-19 14:01:38,876 INFO L507 AbstractCegarLoop]: Abstraction has has 47 places, 85 transitions, 1009 flow [2024-02-19 14:01:38,876 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) 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) [2024-02-19 14:01:38,876 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:01:38,877 INFO L234 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:01:38,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-02-19 14:01:39,087 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:01:39,088 INFO L432 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:01:39,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:01:39,089 INFO L85 PathProgramCache]: Analyzing trace with hash -977352800, now seen corresponding path program 2 times [2024-02-19 14:01:39,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:01:39,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923033393] [2024-02-19 14:01:39,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:01:39,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:01:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:01:39,213 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:39,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:01:39,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923033393] [2024-02-19 14:01:39,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923033393] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:01:39,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938331429] [2024-02-19 14:01:39,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:01:39,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:01:39,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:01:39,215 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:01:39,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-19 14:01:39,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:01:39,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:01:39,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-19 14:01:39,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:01:39,377 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:39,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:01:39,424 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:39,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938331429] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:01:39,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:01:39,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-02-19 14:01:39,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866847885] [2024-02-19 14:01:39,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:01:39,425 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-02-19 14:01:39,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:01:39,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-02-19 14:01:39,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-02-19 14:01:39,426 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-02-19 14:01:39,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 85 transitions, 1009 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 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) [2024-02-19 14:01:39,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:01:39,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-02-19 14:01:39,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:01:39,613 INFO L124 PetriNetUnfolderBase]: 279/592 cut-off events. [2024-02-19 14:01:39,614 INFO L125 PetriNetUnfolderBase]: For 678/678 co-relation queries the response was YES. [2024-02-19 14:01:39,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3860 conditions, 592 events. 279/592 cut-off events. For 678/678 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2272 event pairs, 45 based on Foata normal form. 0/564 useless extension candidates. Maximal degree in co-relation 3362. Up to 535 conditions per place. [2024-02-19 14:01:39,617 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 79 selfloop transitions, 11 changer transitions 26/121 dead transitions. [2024-02-19 14:01:39,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 121 transitions, 1691 flow [2024-02-19 14:01:39,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-19 14:01:39,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-19 14:01:39,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-02-19 14:01:39,618 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3861788617886179 [2024-02-19 14:01:39,619 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 21 predicate places. [2024-02-19 14:01:39,619 INFO L507 AbstractCegarLoop]: Abstraction has has 58 places, 121 transitions, 1691 flow [2024-02-19 14:01:39,619 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 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) [2024-02-19 14:01:39,619 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:01:39,620 INFO L234 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:01:39,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-19 14:01:39,831 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-02-19 14:01:39,832 INFO L432 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:01:39,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:01:39,832 INFO L85 PathProgramCache]: Analyzing trace with hash 550042368, now seen corresponding path program 3 times [2024-02-19 14:01:39,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:01:39,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414801980] [2024-02-19 14:01:39,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:01:39,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:01:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:01:40,069 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:40,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:01:40,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414801980] [2024-02-19 14:01:40,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414801980] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:01:40,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251603555] [2024-02-19 14:01:40,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:01:40,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:01:40,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:01:40,072 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:01:40,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-19 14:01:44,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-02-19 14:01:44,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:01:44,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-19 14:01:44,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:01:44,213 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:44,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:01:44,362 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:44,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251603555] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:01:44,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:01:44,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-02-19 14:01:44,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828571723] [2024-02-19 14:01:44,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:01:44,363 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-19 14:01:44,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:01:44,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-19 14:01:44,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-02-19 14:01:44,365 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-02-19 14:01:44,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 121 transitions, 1691 flow. Second operand has 25 states, 25 states have (on average 9.64) internal successors, (241), 25 states have internal predecessors, (241), 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) [2024-02-19 14:01:44,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:01:44,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-02-19 14:01:44,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:01:44,710 INFO L124 PetriNetUnfolderBase]: 399/832 cut-off events. [2024-02-19 14:01:44,710 INFO L125 PetriNetUnfolderBase]: For 943/943 co-relation queries the response was YES. [2024-02-19 14:01:44,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6339 conditions, 832 events. 399/832 cut-off events. For 943/943 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3106 event pairs, 45 based on Foata normal form. 0/804 useless extension candidates. Maximal degree in co-relation 5774. Up to 775 conditions per place. [2024-02-19 14:01:44,715 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 127 selfloop transitions, 23 changer transitions 38/193 dead transitions. [2024-02-19 14:01:44,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 193 transitions, 3111 flow [2024-02-19 14:01:44,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-02-19 14:01:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-02-19 14:01:44,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 364 transitions. [2024-02-19 14:01:44,717 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3699186991869919 [2024-02-19 14:01:44,718 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 44 predicate places. [2024-02-19 14:01:44,718 INFO L507 AbstractCegarLoop]: Abstraction has has 81 places, 193 transitions, 3111 flow [2024-02-19 14:01:44,718 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.64) internal successors, (241), 25 states have internal predecessors, (241), 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) [2024-02-19 14:01:44,718 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:01:44,718 INFO L234 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:01:44,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-19 14:01:44,933 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:01:44,933 INFO L432 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:01:44,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:01:44,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1997747638, now seen corresponding path program 4 times [2024-02-19 14:01:44,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:01:44,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984640628] [2024-02-19 14:01:44,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:01:44,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:01:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:01:45,641 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:45,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:01:45,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984640628] [2024-02-19 14:01:45,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984640628] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:01:45,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641915661] [2024-02-19 14:01:45,642 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:01:45,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:01:45,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:01:45,643 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:01:45,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-19 14:01:45,889 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:01:45,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:01:45,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 24 conjunts are in the unsatisfiable core [2024-02-19 14:01:45,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:01:45,930 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:45,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:01:46,548 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:46,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641915661] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:01:46,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:01:46,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-02-19 14:01:46,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374786207] [2024-02-19 14:01:46,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:01:46,549 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-02-19 14:01:46,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:01:46,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-02-19 14:01:46,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-02-19 14:01:46,551 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-02-19 14:01:46,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 193 transitions, 3111 flow. Second operand has 49 states, 49 states have (on average 9.326530612244898) internal successors, (457), 49 states have internal predecessors, (457), 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) [2024-02-19 14:01:46,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:01:46,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-02-19 14:01:46,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:01:47,268 INFO L124 PetriNetUnfolderBase]: 639/1312 cut-off events. [2024-02-19 14:01:47,268 INFO L125 PetriNetUnfolderBase]: For 1261/1261 co-relation queries the response was YES. [2024-02-19 14:01:47,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11482 conditions, 1312 events. 639/1312 cut-off events. For 1261/1261 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4755 event pairs, 45 based on Foata normal form. 0/1284 useless extension candidates. Maximal degree in co-relation 10850. Up to 1255 conditions per place. [2024-02-19 14:01:47,277 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 223 selfloop transitions, 47 changer transitions 62/337 dead transitions. [2024-02-19 14:01:47,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 337 transitions, 6151 flow [2024-02-19 14:01:47,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-02-19 14:01:47,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-02-19 14:01:47,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 712 transitions. [2024-02-19 14:01:47,279 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3617886178861789 [2024-02-19 14:01:47,280 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 91 predicate places. [2024-02-19 14:01:47,280 INFO L507 AbstractCegarLoop]: Abstraction has has 128 places, 337 transitions, 6151 flow [2024-02-19 14:01:47,281 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 9.326530612244898) internal successors, (457), 49 states have internal predecessors, (457), 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) [2024-02-19 14:01:47,281 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:01:47,281 INFO L234 CegarLoopForPetriNet]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:01:47,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-19 14:01:47,493 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:01:47,493 INFO L432 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:01:47,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:01:47,494 INFO L85 PathProgramCache]: Analyzing trace with hash 666012106, now seen corresponding path program 5 times [2024-02-19 14:01:47,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:01:47,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313497859] [2024-02-19 14:01:47,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:01:47,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:01:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:01:49,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:01:49,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:01:49,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313497859] [2024-02-19 14:01:49,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313497859] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:01:49,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404728229] [2024-02-19 14:01:49,684 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 14:01:49,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:01:49,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:01:49,686 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:01:49,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Killed by 15