./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/weaver/parallel-misc-5.wvr.c -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 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:45:17,430 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:45:17,482 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:45:17,486 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:45:17,486 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:45:17,501 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:45:17,501 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:45:17,501 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:45:17,502 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:45:17,502 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:45:17,502 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:45:17,503 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:45:17,503 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:45:17,503 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:45:17,504 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:45:17,504 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:45:17,504 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:45:17,504 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:45:17,505 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:45:17,505 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:45:17,505 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:45:17,506 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:45:17,506 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:45:17,506 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:45:17,506 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:45:17,507 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:45:17,507 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:45:17,507 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:45:17,508 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:45:17,511 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:45:17,512 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:45:17,512 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:45:17,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:45:17,512 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:45:17,513 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:45:17,515 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:45:17,516 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:45:17,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:45:17,516 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:45:17,516 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:45:17,516 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:45:17,516 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:45:17,517 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:45:17,517 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f [2024-06-27 16:45:17,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:45:17,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:45:17,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:45:17,737 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:45:17,739 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:45:17,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c [2024-06-27 16:45:18,651 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:45:18,837 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:45:18,837 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c [2024-06-27 16:45:18,847 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85416b220/beee631de9ff4c8fad4150acc426fc73/FLAG332482d33 [2024-06-27 16:45:18,856 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85416b220/beee631de9ff4c8fad4150acc426fc73 [2024-06-27 16:45:18,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:45:18,859 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:45:18,859 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:45:18,859 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:45:18,865 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:45:18,865 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:45:18" (1/1) ... [2024-06-27 16:45:18,867 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dcf3045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:45:18, skipping insertion in model container [2024-06-27 16:45:18,878 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:45:18" (1/1) ... [2024-06-27 16:45:18,894 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:45:19,012 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c[3066,3079] [2024-06-27 16:45:19,015 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:45:19,021 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:45:19,035 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c[3066,3079] [2024-06-27 16:45:19,039 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:45:19,051 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:45:19,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:45:19 WrapperNode [2024-06-27 16:45:19,052 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:45:19,052 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:45:19,052 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:45:19,052 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:45:19,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:45:19" (1/1) ... [2024-06-27 16:45:19,062 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:45:19" (1/1) ... [2024-06-27 16:45:19,077 INFO L138 Inliner]: procedures = 21, calls = 30, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135 [2024-06-27 16:45:19,077 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:45:19,078 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:45:19,078 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:45:19,078 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:45:19,089 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:45:19" (1/1) ... [2024-06-27 16:45:19,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:45:19" (1/1) ... [2024-06-27 16:45:19,090 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:45:19" (1/1) ... [2024-06-27 16:45:19,104 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 16:45:19,104 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:45:19" (1/1) ... [2024-06-27 16:45:19,105 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:45:19" (1/1) ... [2024-06-27 16:45:19,112 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:45:19" (1/1) ... [2024-06-27 16:45:19,115 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:45:19" (1/1) ... [2024-06-27 16:45:19,115 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:45:19" (1/1) ... [2024-06-27 16:45:19,116 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:45:19" (1/1) ... [2024-06-27 16:45:19,117 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:45:19,118 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:45:19,118 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:45:19,118 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:45:19,119 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:45:19" (1/1) ... [2024-06-27 16:45:19,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:45:19,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:45:19,160 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) [2024-06-27 16:45:19,170 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 [2024-06-27 16:45:19,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:45:19,197 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 16:45:19,197 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 16:45:19,198 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 16:45:19,198 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 16:45:19,198 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 16:45:19,198 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 16:45:19,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:45:19,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 16:45:19,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 16:45:19,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:45:19,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:45:19,200 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:45:19,272 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:45:19,273 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:45:19,449 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:45:19,449 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:45:19,572 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:45:19,572 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-27 16:45:19,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:45:19 BoogieIcfgContainer [2024-06-27 16:45:19,572 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:45:19,574 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:45:19,574 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:45:19,576 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:45:19,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:45:18" (1/3) ... [2024-06-27 16:45:19,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7906b4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:45:19, skipping insertion in model container [2024-06-27 16:45:19,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:45:19" (2/3) ... [2024-06-27 16:45:19,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7906b4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:45:19, skipping insertion in model container [2024-06-27 16:45:19,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:45:19" (3/3) ... [2024-06-27 16:45:19,577 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2024-06-27 16:45:19,585 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:45:19,592 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:45:19,592 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 16:45:19,592 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:45:19,632 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-27 16:45:19,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 93 flow [2024-06-27 16:45:19,677 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2024-06-27 16:45:19,677 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:45:19,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 33 events. 4/33 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 70 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-06-27 16:45:19,679 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 36 transitions, 93 flow [2024-06-27 16:45:19,682 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 32 transitions, 82 flow [2024-06-27 16:45:19,694 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:45:19,703 INFO L357 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=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;@e8b188, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:45:19,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 16:45:19,713 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:45:19,717 INFO L124 PetriNetUnfolderBase]: 4/31 cut-off events. [2024-06-27 16:45:19,717 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:45:19,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:45:19,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:45:19,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:45:19,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:45:19,723 INFO L85 PathProgramCache]: Analyzing trace with hash -570853892, now seen corresponding path program 1 times [2024-06-27 16:45:19,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:45:19,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484085312] [2024-06-27 16:45:19,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:45:19,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:45:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:45:20,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:45:20,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:45:20,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484085312] [2024-06-27 16:45:20,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484085312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:45:20,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:45:20,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:45:20,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147838949] [2024-06-27 16:45:20,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:45:20,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:45:20,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:45:20,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:45:20,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:45:20,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 16:45:20,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-06-27 16:45:20,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:45:20,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 16:45:20,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:45:20,701 INFO L124 PetriNetUnfolderBase]: 2330/3326 cut-off events. [2024-06-27 16:45:20,701 INFO L125 PetriNetUnfolderBase]: For 225/225 co-relation queries the response was YES. [2024-06-27 16:45:20,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6827 conditions, 3326 events. 2330/3326 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 16340 event pairs, 132 based on Foata normal form. 0/2708 useless extension candidates. Maximal degree in co-relation 6412. Up to 990 conditions per place. [2024-06-27 16:45:20,724 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 87 selfloop transitions, 9 changer transitions 6/108 dead transitions. [2024-06-27 16:45:20,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 108 transitions, 465 flow [2024-06-27 16:45:20,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:45:20,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:45:20,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 16:45:20,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 16:45:20,737 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 82 flow. Second operand 7 states and 168 transitions. [2024-06-27 16:45:20,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 108 transitions, 465 flow [2024-06-27 16:45:20,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 108 transitions, 435 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 16:45:20,748 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 130 flow [2024-06-27 16:45:20,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=130, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2024-06-27 16:45:20,755 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2024-06-27 16:45:20,756 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 130 flow [2024-06-27 16:45:20,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-06-27 16:45:20,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:45:20,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:45:20,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:45:20,757 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:45:20,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:45:20,759 INFO L85 PathProgramCache]: Analyzing trace with hash -376464844, now seen corresponding path program 1 times [2024-06-27 16:45:20,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:45:20,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355314101] [2024-06-27 16:45:20,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:45:20,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:45:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:45:20,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:45:20,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:45:20,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355314101] [2024-06-27 16:45:20,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355314101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:45:20,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:45:20,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 16:45:20,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74872002] [2024-06-27 16:45:20,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:45:20,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:45:20,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:45:20,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:45:20,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:45:20,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-06-27 16:45:20,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-06-27 16:45:20,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:45:20,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-06-27 16:45:20,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:45:21,016 INFO L124 PetriNetUnfolderBase]: 1729/2698 cut-off events. [2024-06-27 16:45:21,017 INFO L125 PetriNetUnfolderBase]: For 974/1065 co-relation queries the response was YES. [2024-06-27 16:45:21,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6018 conditions, 2698 events. 1729/2698 cut-off events. For 974/1065 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 14597 event pairs, 584 based on Foata normal form. 126/2291 useless extension candidates. Maximal degree in co-relation 4168. Up to 1464 conditions per place. [2024-06-27 16:45:21,029 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 45 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-06-27 16:45:21,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 60 transitions, 283 flow [2024-06-27 16:45:21,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:45:21,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:45:21,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-27 16:45:21,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7407407407407407 [2024-06-27 16:45:21,034 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 130 flow. Second operand 3 states and 80 transitions. [2024-06-27 16:45:21,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 60 transitions, 283 flow [2024-06-27 16:45:21,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 60 transitions, 283 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 16:45:21,037 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 146 flow [2024-06-27 16:45:21,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-06-27 16:45:21,038 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2024-06-27 16:45:21,038 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 146 flow [2024-06-27 16:45:21,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-06-27 16:45:21,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:45:21,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:45:21,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:45:21,040 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:45:21,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:45:21,041 INFO L85 PathProgramCache]: Analyzing trace with hash 561868062, now seen corresponding path program 1 times [2024-06-27 16:45:21,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:45:21,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489011527] [2024-06-27 16:45:21,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:45:21,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:45:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:45:21,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:45:21,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:45:21,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489011527] [2024-06-27 16:45:21,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489011527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:45:21,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:45:21,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 16:45:21,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193851694] [2024-06-27 16:45:21,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:45:21,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:45:21,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:45:21,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:45:21,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:45:21,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-06-27 16:45:21,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-06-27 16:45:21,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:45:21,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-06-27 16:45:21,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:45:21,344 INFO L124 PetriNetUnfolderBase]: 2372/3707 cut-off events. [2024-06-27 16:45:21,344 INFO L125 PetriNetUnfolderBase]: For 1523/1566 co-relation queries the response was YES. [2024-06-27 16:45:21,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8689 conditions, 3707 events. 2372/3707 cut-off events. For 1523/1566 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 20744 event pairs, 779 based on Foata normal form. 139/3112 useless extension candidates. Maximal degree in co-relation 5774. Up to 2237 conditions per place. [2024-06-27 16:45:21,359 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 44 selfloop transitions, 2 changer transitions 1/60 dead transitions. [2024-06-27 16:45:21,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 307 flow [2024-06-27 16:45:21,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:45:21,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:45:21,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-06-27 16:45:21,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2024-06-27 16:45:21,362 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 146 flow. Second operand 3 states and 78 transitions. [2024-06-27 16:45:21,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 307 flow [2024-06-27 16:45:21,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 304 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:45:21,367 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 158 flow [2024-06-27 16:45:21,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-06-27 16:45:21,368 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 9 predicate places. [2024-06-27 16:45:21,368 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 158 flow [2024-06-27 16:45:21,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-06-27 16:45:21,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:45:21,369 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:45:21,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 16:45:21,369 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:45:21,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:45:21,370 INFO L85 PathProgramCache]: Analyzing trace with hash 787759514, now seen corresponding path program 1 times [2024-06-27 16:45:21,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:45:21,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478549041] [2024-06-27 16:45:21,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:45:21,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:45:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:45:21,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:45:21,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:45:21,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478549041] [2024-06-27 16:45:21,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478549041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:45:21,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:45:21,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:45:21,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206910778] [2024-06-27 16:45:21,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:45:21,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:45:21,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:45:21,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:45:21,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:45:21,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 16:45:21,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 158 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:45:21,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:45:21,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 16:45:21,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:45:22,426 INFO L124 PetriNetUnfolderBase]: 8812/13015 cut-off events. [2024-06-27 16:45:22,427 INFO L125 PetriNetUnfolderBase]: For 6896/6896 co-relation queries the response was YES. [2024-06-27 16:45:22,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32500 conditions, 13015 events. 8812/13015 cut-off events. For 6896/6896 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 78410 event pairs, 1160 based on Foata normal form. 198/10968 useless extension candidates. Maximal degree in co-relation 9987. Up to 4034 conditions per place. [2024-06-27 16:45:22,469 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 117 selfloop transitions, 24 changer transitions 16/163 dead transitions. [2024-06-27 16:45:22,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 163 transitions, 875 flow [2024-06-27 16:45:22,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 16:45:22,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 16:45:22,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 16:45:22,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6759259259259259 [2024-06-27 16:45:22,470 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 158 flow. Second operand 9 states and 219 transitions. [2024-06-27 16:45:22,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 163 transitions, 875 flow [2024-06-27 16:45:22,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 163 transitions, 869 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:45:22,475 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 367 flow [2024-06-27 16:45:22,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=367, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2024-06-27 16:45:22,476 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 22 predicate places. [2024-06-27 16:45:22,476 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 367 flow [2024-06-27 16:45:22,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:45:22,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:45:22,477 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:45:22,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 16:45:22,477 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:45:22,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:45:22,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1537950590, now seen corresponding path program 2 times [2024-06-27 16:45:22,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:45:22,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979193779] [2024-06-27 16:45:22,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:45:22,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:45:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:45:22,531 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 16:45:22,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:45:22,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979193779] [2024-06-27 16:45:22,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979193779] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:45:22,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040572852] [2024-06-27 16:45:22,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 16:45:22,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:45:22,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:45:22,533 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) [2024-06-27 16:45:22,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 16:45:22,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 16:45:22,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:45:22,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-27 16:45:22,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:45:22,701 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 16:45:22,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:45:22,750 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 16:45:22,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040572852] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:45:22,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:45:22,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 8 [2024-06-27 16:45:22,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879245617] [2024-06-27 16:45:22,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:45:22,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 16:45:22,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:45:22,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 16:45:22,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 16:45:22,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 16:45:22,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 367 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 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) [2024-06-27 16:45:22,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:45:22,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 16:45:22,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:45:23,834 INFO L124 PetriNetUnfolderBase]: 9724/14449 cut-off events. [2024-06-27 16:45:23,834 INFO L125 PetriNetUnfolderBase]: For 33193/33257 co-relation queries the response was YES. [2024-06-27 16:45:23,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43336 conditions, 14449 events. 9724/14449 cut-off events. For 33193/33257 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 83572 event pairs, 869 based on Foata normal form. 171/12599 useless extension candidates. Maximal degree in co-relation 39671. Up to 3745 conditions per place. [2024-06-27 16:45:23,976 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 165 selfloop transitions, 32 changer transitions 6/215 dead transitions. [2024-06-27 16:45:23,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 215 transitions, 1617 flow [2024-06-27 16:45:23,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 16:45:23,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 16:45:23,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 284 transitions. [2024-06-27 16:45:23,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6068376068376068 [2024-06-27 16:45:23,981 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 367 flow. Second operand 13 states and 284 transitions. [2024-06-27 16:45:23,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 215 transitions, 1617 flow [2024-06-27 16:45:24,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 215 transitions, 1546 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 16:45:24,009 INFO L231 Difference]: Finished difference. Result has 76 places, 82 transitions, 702 flow [2024-06-27 16:45:24,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=702, PETRI_PLACES=76, PETRI_TRANSITIONS=82} [2024-06-27 16:45:24,011 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 38 predicate places. [2024-06-27 16:45:24,012 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 82 transitions, 702 flow [2024-06-27 16:45:24,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 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) [2024-06-27 16:45:24,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:45:24,013 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:45:24,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-27 16:45:24,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:45:24,224 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:45:24,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:45:24,225 INFO L85 PathProgramCache]: Analyzing trace with hash 36582496, now seen corresponding path program 1 times [2024-06-27 16:45:24,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:45:24,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246869605] [2024-06-27 16:45:24,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:45:24,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:45:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:45:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 16:45:24,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:45:24,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246869605] [2024-06-27 16:45:24,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246869605] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:45:24,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811097085] [2024-06-27 16:45:24,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:45:24,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:45:24,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:45:24,302 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) [2024-06-27 16:45:24,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-27 16:45:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:45:24,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2024-06-27 16:45:24,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:45:24,406 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:45:24,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:45:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 16:45:24,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811097085] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:45:24,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:45:24,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2024-06-27 16:45:24,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746276345] [2024-06-27 16:45:24,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:45:24,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:45:24,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:45:24,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:45:24,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:45:24,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-06-27 16:45:24,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 82 transitions, 702 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2024-06-27 16:45:24,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:45:24,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-06-27 16:45:24,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:45:26,243 INFO L124 PetriNetUnfolderBase]: 15721/24440 cut-off events. [2024-06-27 16:45:26,243 INFO L125 PetriNetUnfolderBase]: For 100610/101394 co-relation queries the response was YES. [2024-06-27 16:45:26,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86315 conditions, 24440 events. 15721/24440 cut-off events. For 100610/101394 co-relation queries the response was YES. Maximal size of possible extension queue 990. Compared 169903 event pairs, 6402 based on Foata normal form. 819/21705 useless extension candidates. Maximal degree in co-relation 72589. Up to 8394 conditions per place. [2024-06-27 16:45:26,393 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 128 selfloop transitions, 11 changer transitions 0/162 dead transitions. [2024-06-27 16:45:26,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 162 transitions, 1703 flow [2024-06-27 16:45:26,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:45:26,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:45:26,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-06-27 16:45:26,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7569444444444444 [2024-06-27 16:45:26,395 INFO L175 Difference]: Start difference. First operand has 76 places, 82 transitions, 702 flow. Second operand 4 states and 109 transitions. [2024-06-27 16:45:26,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 162 transitions, 1703 flow [2024-06-27 16:45:26,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 162 transitions, 1610 flow, removed 46 selfloop flow, removed 1 redundant places. [2024-06-27 16:45:26,547 INFO L231 Difference]: Finished difference. Result has 80 places, 90 transitions, 792 flow [2024-06-27 16:45:26,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=792, PETRI_PLACES=80, PETRI_TRANSITIONS=90} [2024-06-27 16:45:26,548 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 42 predicate places. [2024-06-27 16:45:26,548 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 90 transitions, 792 flow [2024-06-27 16:45:26,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2024-06-27 16:45:26,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:45:26,548 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:45:26,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-27 16:45:26,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-06-27 16:45:26,754 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:45:26,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:45:26,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1913882398, now seen corresponding path program 3 times [2024-06-27 16:45:26,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:45:26,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148954348] [2024-06-27 16:45:26,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:45:26,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:45:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:45:26,952 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 16:45:26,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:45:26,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148954348] [2024-06-27 16:45:26,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148954348] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:45:26,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264031147] [2024-06-27 16:45:26,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 16:45:26,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:45:26,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:45:26,954 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) [2024-06-27 16:45:26,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-27 16:45:27,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-06-27 16:45:27,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:45:27,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 11 conjunts are in the unsatisfiable core [2024-06-27 16:45:27,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:45:27,062 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 16:45:27,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:45:27,131 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 16:45:27,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264031147] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:45:27,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:45:27,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2024-06-27 16:45:27,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235059410] [2024-06-27 16:45:27,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:45:27,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 16:45:27,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:45:27,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 16:45:27,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 16:45:27,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 16:45:27,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 90 transitions, 792 flow. Second operand has 11 states, 11 states have (on average 13.0) internal successors, (143), 11 states have internal predecessors, (143), 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) [2024-06-27 16:45:27,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:45:27,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 16:45:27,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:45:32,418 INFO L124 PetriNetUnfolderBase]: 49612/73101 cut-off events. [2024-06-27 16:45:32,418 INFO L125 PetriNetUnfolderBase]: For 332729/333084 co-relation queries the response was YES. [2024-06-27 16:45:32,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268744 conditions, 73101 events. 49612/73101 cut-off events. For 332729/333084 co-relation queries the response was YES. Maximal size of possible extension queue 2809. Compared 528039 event pairs, 8408 based on Foata normal form. 1259/65189 useless extension candidates. Maximal degree in co-relation 192373. Up to 18201 conditions per place. [2024-06-27 16:45:32,763 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 150 selfloop transitions, 94 changer transitions 107/363 dead transitions. [2024-06-27 16:45:32,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 363 transitions, 3497 flow [2024-06-27 16:45:32,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 16:45:32,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 16:45:32,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 320 transitions. [2024-06-27 16:45:32,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2024-06-27 16:45:32,764 INFO L175 Difference]: Start difference. First operand has 80 places, 90 transitions, 792 flow. Second operand 14 states and 320 transitions. [2024-06-27 16:45:32,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 363 transitions, 3497 flow [2024-06-27 16:45:33,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 363 transitions, 3451 flow, removed 23 selfloop flow, removed 0 redundant places. [2024-06-27 16:45:33,241 INFO L231 Difference]: Finished difference. Result has 103 places, 147 transitions, 1948 flow [2024-06-27 16:45:33,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1948, PETRI_PLACES=103, PETRI_TRANSITIONS=147} [2024-06-27 16:45:33,241 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 65 predicate places. [2024-06-27 16:45:33,241 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 147 transitions, 1948 flow [2024-06-27 16:45:33,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.0) internal successors, (143), 11 states have internal predecessors, (143), 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) [2024-06-27 16:45:33,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:45:33,242 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:45:33,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-06-27 16:45:33,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:45:33,442 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:45:33,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:45:33,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1187390958, now seen corresponding path program 4 times [2024-06-27 16:45:33,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:45:33,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967052234] [2024-06-27 16:45:33,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:45:33,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:45:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:45:33,661 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-06-27 16:45:33,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:45:33,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967052234] [2024-06-27 16:45:33,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967052234] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:45:33,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209366089] [2024-06-27 16:45:33,662 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 16:45:33,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:45:33,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:45:33,663 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) [2024-06-27 16:45:33,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-06-27 16:45:33,719 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 16:45:33,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:45:33,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-27 16:45:33,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:45:33,761 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 16:45:33,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:45:33,800 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-06-27 16:45:33,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209366089] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:45:33,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:45:33,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 5 [2024-06-27 16:45:33,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240840868] [2024-06-27 16:45:33,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:45:33,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:45:33,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:45:33,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:45:33,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:45:33,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-06-27 16:45:33,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 147 transitions, 1948 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-06-27 16:45:33,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:45:33,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-06-27 16:45:33,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:45:37,288 INFO L124 PetriNetUnfolderBase]: 24023/38265 cut-off events. [2024-06-27 16:45:37,288 INFO L125 PetriNetUnfolderBase]: For 341458/342226 co-relation queries the response was YES. [2024-06-27 16:45:37,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168496 conditions, 38265 events. 24023/38265 cut-off events. For 341458/342226 co-relation queries the response was YES. Maximal size of possible extension queue 916. Compared 276588 event pairs, 8350 based on Foata normal form. 705/33397 useless extension candidates. Maximal degree in co-relation 166684. Up to 10700 conditions per place. [2024-06-27 16:45:37,547 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 212 selfloop transitions, 67 changer transitions 0/306 dead transitions. [2024-06-27 16:45:37,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 306 transitions, 4508 flow [2024-06-27 16:45:37,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:45:37,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:45:37,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-06-27 16:45:37,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8111111111111111 [2024-06-27 16:45:37,548 INFO L175 Difference]: Start difference. First operand has 103 places, 147 transitions, 1948 flow. Second operand 5 states and 146 transitions. [2024-06-27 16:45:37,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 306 transitions, 4508 flow [2024-06-27 16:45:38,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 306 transitions, 4323 flow, removed 82 selfloop flow, removed 7 redundant places. [2024-06-27 16:45:38,155 INFO L231 Difference]: Finished difference. Result has 101 places, 181 transitions, 2683 flow [2024-06-27 16:45:38,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1833, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2683, PETRI_PLACES=101, PETRI_TRANSITIONS=181} [2024-06-27 16:45:38,156 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 63 predicate places. [2024-06-27 16:45:38,156 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 181 transitions, 2683 flow [2024-06-27 16:45:38,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-06-27 16:45:38,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:45:38,156 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:45:38,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-06-27 16:45:38,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:45:38,360 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:45:38,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:45:38,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1731925396, now seen corresponding path program 2 times [2024-06-27 16:45:38,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:45:38,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450770627] [2024-06-27 16:45:38,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:45:38,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:45:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:45:38,437 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-06-27 16:45:38,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:45:38,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450770627] [2024-06-27 16:45:38,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450770627] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:45:38,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640910621] [2024-06-27 16:45:38,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 16:45:38,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:45:38,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:45:38,439 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) [2024-06-27 16:45:38,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-06-27 16:45:38,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 16:45:38,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:45:38,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-27 16:45:38,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:45:38,532 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 16:45:38,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:45:38,568 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-06-27 16:45:38,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640910621] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:45:38,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:45:38,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 5 [2024-06-27 16:45:38,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324861559] [2024-06-27 16:45:38,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:45:38,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:45:38,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:45:38,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:45:38,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:45:38,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-06-27 16:45:38,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 181 transitions, 2683 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-06-27 16:45:38,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:45:38,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-06-27 16:45:38,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:45:45,710 INFO L124 PetriNetUnfolderBase]: 46443/73340 cut-off events. [2024-06-27 16:45:45,710 INFO L125 PetriNetUnfolderBase]: For 646146/648823 co-relation queries the response was YES. [2024-06-27 16:45:46,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316872 conditions, 73340 events. 46443/73340 cut-off events. For 646146/648823 co-relation queries the response was YES. Maximal size of possible extension queue 1785. Compared 580791 event pairs, 15626 based on Foata normal form. 1801/64579 useless extension candidates. Maximal degree in co-relation 286266. Up to 20718 conditions per place. [2024-06-27 16:45:46,460 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 328 selfloop transitions, 67 changer transitions 0/422 dead transitions. [2024-06-27 16:45:46,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 422 transitions, 7430 flow [2024-06-27 16:45:46,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:45:46,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:45:46,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-06-27 16:45:46,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2024-06-27 16:45:46,462 INFO L175 Difference]: Start difference. First operand has 101 places, 181 transitions, 2683 flow. Second operand 5 states and 140 transitions. [2024-06-27 16:45:46,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 422 transitions, 7430 flow [2024-06-27 16:45:47,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 422 transitions, 7186 flow, removed 122 selfloop flow, removed 0 redundant places. [2024-06-27 16:45:47,412 INFO L231 Difference]: Finished difference. Result has 108 places, 218 transitions, 3456 flow [2024-06-27 16:45:47,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2607, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3456, PETRI_PLACES=108, PETRI_TRANSITIONS=218} [2024-06-27 16:45:47,413 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 70 predicate places. [2024-06-27 16:45:47,413 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 218 transitions, 3456 flow [2024-06-27 16:45:47,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-06-27 16:45:47,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:45:47,413 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:45:47,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-06-27 16:45:47,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:45:47,623 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:45:47,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:45:47,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1194979134, now seen corresponding path program 5 times [2024-06-27 16:45:47,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:45:47,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960797122] [2024-06-27 16:45:47,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:45:47,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:45:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:45:47,775 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-27 16:45:47,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:45:47,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960797122] [2024-06-27 16:45:47,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960797122] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:45:47,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260465193] [2024-06-27 16:45:47,776 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-27 16:45:47,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:45:47,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:45:47,777 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:45:47,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-06-27 16:45:47,834 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-06-27 16:45:47,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:45:47,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 16 conjunts are in the unsatisfiable core [2024-06-27 16:45:47,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:45:47,927 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 11 proven. 41 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-06-27 16:45:47,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:45:48,035 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-06-27 16:45:48,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260465193] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:45:48,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:45:48,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 9] total 15 [2024-06-27 16:45:48,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060064643] [2024-06-27 16:45:48,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:45:48,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-06-27 16:45:48,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:45:48,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-06-27 16:45:48,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-06-27 16:45:48,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 16:45:48,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 218 transitions, 3456 flow. Second operand has 16 states, 16 states have (on average 12.625) internal successors, (202), 16 states have internal predecessors, (202), 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) [2024-06-27 16:45:48,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:45:48,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 16:45:48,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand