./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-easy1.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/test-easy1.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 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 17:08:24,139 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 17:08:24,211 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 17:08:24,214 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 17:08:24,215 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 17:08:24,241 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 17:08:24,243 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 17:08:24,243 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 17:08:24,244 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 17:08:24,247 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 17:08:24,247 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 17:08:24,247 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 17:08:24,248 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 17:08:24,249 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 17:08:24,249 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 17:08:24,249 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 17:08:24,249 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 17:08:24,250 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 17:08:24,250 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 17:08:24,250 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 17:08:24,250 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 17:08:24,250 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 17:08:24,251 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 17:08:24,251 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 17:08:24,251 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 17:08:24,251 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 17:08:24,251 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 17:08:24,252 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 17:08:24,252 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 17:08:24,252 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 17:08:24,253 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 17:08:24,253 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 17:08:24,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:08:24,254 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 17:08:24,254 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 17:08:24,254 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 17:08:24,254 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 17:08:24,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 17:08:24,254 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 17:08:24,254 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 17:08:24,255 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 17:08:24,255 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 17:08:24,255 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 17:08:24,255 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d [2024-06-27 17:08:24,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 17:08:24,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 17:08:24,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 17:08:24,542 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 17:08:24,542 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 17:08:24,543 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c [2024-06-27 17:08:25,544 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 17:08:25,737 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 17:08:25,738 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c [2024-06-27 17:08:25,743 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/594ffbede/e8b78efc484049d2a242932cab7d457c/FLAG22a6de42c [2024-06-27 17:08:25,754 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/594ffbede/e8b78efc484049d2a242932cab7d457c [2024-06-27 17:08:25,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 17:08:25,757 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 17:08:25,758 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 17:08:25,758 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 17:08:25,762 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 17:08:25,762 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:08:25" (1/1) ... [2024-06-27 17:08:25,763 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70ef4eb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:25, skipping insertion in model container [2024-06-27 17:08:25,763 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:08:25" (1/1) ... [2024-06-27 17:08:25,780 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 17:08:25,931 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/test-easy1.wvr.c[1902,1915] [2024-06-27 17:08:25,936 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:08:25,944 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 17:08:25,961 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/test-easy1.wvr.c[1902,1915] [2024-06-27 17:08:25,961 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:08:25,974 INFO L206 MainTranslator]: Completed translation [2024-06-27 17:08:25,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:25 WrapperNode [2024-06-27 17:08:25,974 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 17:08:25,975 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 17:08:25,975 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 17:08:25,975 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 17:08:25,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:25" (1/1) ... [2024-06-27 17:08:25,988 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:25" (1/1) ... [2024-06-27 17:08:26,007 INFO L138 Inliner]: procedures = 20, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 45 [2024-06-27 17:08:26,007 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 17:08:26,008 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 17:08:26,008 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 17:08:26,008 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 17:08:26,015 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:25" (1/1) ... [2024-06-27 17:08:26,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:25" (1/1) ... [2024-06-27 17:08:26,025 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:25" (1/1) ... [2024-06-27 17:08:26,034 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 17:08:26,034 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:25" (1/1) ... [2024-06-27 17:08:26,034 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:25" (1/1) ... [2024-06-27 17:08:26,036 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:25" (1/1) ... [2024-06-27 17:08:26,038 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:25" (1/1) ... [2024-06-27 17:08:26,039 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:25" (1/1) ... [2024-06-27 17:08:26,040 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:25" (1/1) ... [2024-06-27 17:08:26,041 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 17:08:26,044 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 17:08:26,044 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 17:08:26,044 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 17:08:26,044 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:25" (1/1) ... [2024-06-27 17:08:26,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:08:26,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:26,075 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 17:08:26,096 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 17:08:26,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 17:08:26,129 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 17:08:26,129 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 17:08:26,129 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 17:08:26,129 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 17:08:26,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 17:08:26,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 17:08:26,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 17:08:26,132 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 17:08:26,194 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 17:08:26,195 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 17:08:26,394 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 17:08:26,395 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 17:08:26,519 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 17:08:26,519 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-27 17:08:26,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:08:26 BoogieIcfgContainer [2024-06-27 17:08:26,519 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 17:08:26,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 17:08:26,521 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 17:08:26,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 17:08:26,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 05:08:25" (1/3) ... [2024-06-27 17:08:26,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6dfd91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:08:26, skipping insertion in model container [2024-06-27 17:08:26,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:25" (2/3) ... [2024-06-27 17:08:26,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6dfd91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:08:26, skipping insertion in model container [2024-06-27 17:08:26,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:08:26" (3/3) ... [2024-06-27 17:08:26,525 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2024-06-27 17:08:26,531 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 17:08:26,537 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 17:08:26,537 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 17:08:26,538 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 17:08:26,571 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-27 17:08:26,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 18 transitions, 50 flow [2024-06-27 17:08:26,616 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-06-27 17:08:26,616 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-27 17:08:26,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 16 events. 2/16 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-06-27 17:08:26,618 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 18 transitions, 50 flow [2024-06-27 17:08:26,621 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow [2024-06-27 17:08:26,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 17:08:26,632 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;@717d91fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 17:08:26,633 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-06-27 17:08:26,640 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 17:08:26,641 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-06-27 17:08:26,641 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-27 17:08:26,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:26,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:26,642 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:26,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:26,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1354130280, now seen corresponding path program 1 times [2024-06-27 17:08:26,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:26,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632688912] [2024-06-27 17:08:26,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:26,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:26,844 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 17:08:26,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:26,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632688912] [2024-06-27 17:08:26,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632688912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:08:26,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:08:26,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 17:08:26,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717888257] [2024-06-27 17:08:26,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:08:26,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:08:26,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:26,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:08:26,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:08:26,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:26,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:26,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:26,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:26,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:26,931 INFO L124 PetriNetUnfolderBase]: 59/104 cut-off events. [2024-06-27 17:08:26,932 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-06-27 17:08:26,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 104 events. 59/104 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 273 event pairs, 8 based on Foata normal form. 1/70 useless extension candidates. Maximal degree in co-relation 179. Up to 77 conditions per place. [2024-06-27 17:08:26,934 INFO L140 encePairwiseOnDemand]: 14/18 looper letters, 17 selfloop transitions, 3 changer transitions 1/24 dead transitions. [2024-06-27 17:08:26,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 24 transitions, 111 flow [2024-06-27 17:08:26,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:08:26,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:08:26,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2024-06-27 17:08:26,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2024-06-27 17:08:26,944 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 3 states and 37 transitions. [2024-06-27 17:08:26,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 24 transitions, 111 flow [2024-06-27 17:08:26,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 24 transitions, 97 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 17:08:26,947 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2024-06-27 17:08:26,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2024-06-27 17:08:26,953 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2024-06-27 17:08:26,954 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2024-06-27 17:08:26,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:26,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:26,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:26,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 17:08:26,954 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:26,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:26,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1417842389, now seen corresponding path program 1 times [2024-06-27 17:08:26,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:26,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441492378] [2024-06-27 17:08:26,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:26,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:27,052 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 17:08:27,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:27,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441492378] [2024-06-27 17:08:27,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441492378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:08:27,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:08:27,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 17:08:27,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899140699] [2024-06-27 17:08:27,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:08:27,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 17:08:27,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:27,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 17:08:27,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 17:08:27,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:27,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:27,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:27,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:27,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:27,148 INFO L124 PetriNetUnfolderBase]: 62/118 cut-off events. [2024-06-27 17:08:27,148 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-06-27 17:08:27,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 118 events. 62/118 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 337 event pairs, 6 based on Foata normal form. 4/122 useless extension candidates. Maximal degree in co-relation 112. Up to 56 conditions per place. [2024-06-27 17:08:27,151 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 25 selfloop transitions, 7 changer transitions 0/35 dead transitions. [2024-06-27 17:08:27,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 35 transitions, 169 flow [2024-06-27 17:08:27,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 17:08:27,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 17:08:27,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2024-06-27 17:08:27,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-06-27 17:08:27,154 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 5 states and 55 transitions. [2024-06-27 17:08:27,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 35 transitions, 169 flow [2024-06-27 17:08:27,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 35 transitions, 165 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 17:08:27,155 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 106 flow [2024-06-27 17:08:27,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=25, PETRI_TRANSITIONS=23} [2024-06-27 17:08:27,156 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 5 predicate places. [2024-06-27 17:08:27,157 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 106 flow [2024-06-27 17:08:27,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:27,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:27,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:27,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 17:08:27,158 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:27,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:27,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1979750107, now seen corresponding path program 2 times [2024-06-27 17:08:27,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:27,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136924974] [2024-06-27 17:08:27,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:27,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:27,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:27,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:27,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136924974] [2024-06-27 17:08:27,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136924974] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:27,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176913170] [2024-06-27 17:08:27,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 17:08:27,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:27,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:27,269 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 17:08:27,281 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 17:08:27,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 17:08:27,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:27,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2024-06-27 17:08:27,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:27,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:27,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:27,486 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 17:08:27,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176913170] provided 1 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:27,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-06-27 17:08:27,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2024-06-27 17:08:27,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129387998] [2024-06-27 17:08:27,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:08:27,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 17:08:27,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:27,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 17:08:27,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 17:08:27,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:27,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:27,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:27,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:27,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:27,542 INFO L124 PetriNetUnfolderBase]: 56/110 cut-off events. [2024-06-27 17:08:27,542 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2024-06-27 17:08:27,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 110 events. 56/110 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 311 event pairs, 8 based on Foata normal form. 5/115 useless extension candidates. Maximal degree in co-relation 244. Up to 46 conditions per place. [2024-06-27 17:08:27,543 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 22 selfloop transitions, 8 changer transitions 2/35 dead transitions. [2024-06-27 17:08:27,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 35 transitions, 216 flow [2024-06-27 17:08:27,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 17:08:27,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 17:08:27,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 48 transitions. [2024-06-27 17:08:27,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 17:08:27,545 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 106 flow. Second operand 4 states and 48 transitions. [2024-06-27 17:08:27,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 35 transitions, 216 flow [2024-06-27 17:08:27,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 216 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 17:08:27,547 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 127 flow [2024-06-27 17:08:27,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2024-06-27 17:08:27,547 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 9 predicate places. [2024-06-27 17:08:27,548 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 127 flow [2024-06-27 17:08:27,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:27,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:27,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:27,562 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 17:08:27,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:27,749 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:27,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:27,749 INFO L85 PathProgramCache]: Analyzing trace with hash -972711790, now seen corresponding path program 1 times [2024-06-27 17:08:27,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:27,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491312072] [2024-06-27 17:08:27,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:27,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:27,825 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 17:08:27,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:27,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491312072] [2024-06-27 17:08:27,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491312072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:08:27,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:08:27,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 17:08:27,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092318948] [2024-06-27 17:08:27,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:08:27,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 17:08:27,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:27,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 17:08:27,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 17:08:27,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:27,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:27,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:27,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:27,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:27,904 INFO L124 PetriNetUnfolderBase]: 54/116 cut-off events. [2024-06-27 17:08:27,904 INFO L125 PetriNetUnfolderBase]: For 244/244 co-relation queries the response was YES. [2024-06-27 17:08:27,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 116 events. 54/116 cut-off events. For 244/244 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 338 event pairs, 4 based on Foata normal form. 6/122 useless extension candidates. Maximal degree in co-relation 220. Up to 44 conditions per place. [2024-06-27 17:08:27,906 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 29 selfloop transitions, 7 changer transitions 3/42 dead transitions. [2024-06-27 17:08:27,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 293 flow [2024-06-27 17:08:27,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 17:08:27,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 17:08:27,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-06-27 17:08:27,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-06-27 17:08:27,907 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 127 flow. Second operand 5 states and 58 transitions. [2024-06-27 17:08:27,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 293 flow [2024-06-27 17:08:27,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 42 transitions, 261 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 17:08:27,909 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 161 flow [2024-06-27 17:08:27,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-27 17:08:27,910 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 13 predicate places. [2024-06-27 17:08:27,910 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 161 flow [2024-06-27 17:08:27,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:27,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:27,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:27,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 17:08:27,911 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:27,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:27,911 INFO L85 PathProgramCache]: Analyzing trace with hash -733518492, now seen corresponding path program 2 times [2024-06-27 17:08:27,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:27,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825629036] [2024-06-27 17:08:27,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:27,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:27,946 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 17:08:27,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:27,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825629036] [2024-06-27 17:08:27,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825629036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:08:27,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:08:27,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 17:08:27,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802509863] [2024-06-27 17:08:27,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:08:27,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 17:08:27,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:27,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 17:08:27,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 17:08:27,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:27,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:27,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:27,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:27,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:28,007 INFO L124 PetriNetUnfolderBase]: 43/93 cut-off events. [2024-06-27 17:08:28,008 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2024-06-27 17:08:28,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 93 events. 43/93 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 214 event pairs, 5 based on Foata normal form. 4/97 useless extension candidates. Maximal degree in co-relation 286. Up to 76 conditions per place. [2024-06-27 17:08:28,009 INFO L140 encePairwiseOnDemand]: 14/18 looper letters, 22 selfloop transitions, 5 changer transitions 0/30 dead transitions. [2024-06-27 17:08:28,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 225 flow [2024-06-27 17:08:28,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 17:08:28,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 17:08:28,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 42 transitions. [2024-06-27 17:08:28,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-27 17:08:28,012 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 161 flow. Second operand 4 states and 42 transitions. [2024-06-27 17:08:28,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 225 flow [2024-06-27 17:08:28,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 219 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 17:08:28,015 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 163 flow [2024-06-27 17:08:28,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2024-06-27 17:08:28,016 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 16 predicate places. [2024-06-27 17:08:28,016 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 163 flow [2024-06-27 17:08:28,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:28,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:28,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:28,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 17:08:28,016 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:28,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:28,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1230592891, now seen corresponding path program 1 times [2024-06-27 17:08:28,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:28,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164146562] [2024-06-27 17:08:28,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:28,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:28,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:28,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:28,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164146562] [2024-06-27 17:08:28,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164146562] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:28,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874274571] [2024-06-27 17:08:28,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:28,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:28,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:28,165 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 17:08:28,210 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 17:08:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:28,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-27 17:08:28,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:28,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:28,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:28,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:28,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874274571] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:28,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:28,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-06-27 17:08:28,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854170990] [2024-06-27 17:08:28,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:28,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:08:28,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:28,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:08:28,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:08:28,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:28,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 163 flow. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 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 17:08:28,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:28,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:28,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:28,661 INFO L124 PetriNetUnfolderBase]: 129/260 cut-off events. [2024-06-27 17:08:28,661 INFO L125 PetriNetUnfolderBase]: For 679/679 co-relation queries the response was YES. [2024-06-27 17:08:28,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1114 conditions, 260 events. 129/260 cut-off events. For 679/679 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 985 event pairs, 1 based on Foata normal form. 24/284 useless extension candidates. Maximal degree in co-relation 492. Up to 94 conditions per place. [2024-06-27 17:08:28,666 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 49 selfloop transitions, 32 changer transitions 21/105 dead transitions. [2024-06-27 17:08:28,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 105 transitions, 833 flow [2024-06-27 17:08:28,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-27 17:08:28,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-27 17:08:28,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 182 transitions. [2024-06-27 17:08:28,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5947712418300654 [2024-06-27 17:08:28,671 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 163 flow. Second operand 17 states and 182 transitions. [2024-06-27 17:08:28,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 105 transitions, 833 flow [2024-06-27 17:08:28,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 105 transitions, 810 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 17:08:28,676 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 519 flow [2024-06-27 17:08:28,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=519, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-27 17:08:28,679 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 37 predicate places. [2024-06-27 17:08:28,679 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 519 flow [2024-06-27 17:08:28,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 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 17:08:28,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:28,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:28,698 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 17:08:28,891 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 17:08:28,894 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:28,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:28,894 INFO L85 PathProgramCache]: Analyzing trace with hash -18214447, now seen corresponding path program 2 times [2024-06-27 17:08:28,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:28,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279436813] [2024-06-27 17:08:28,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:28,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:28,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:28,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279436813] [2024-06-27 17:08:28,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279436813] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:28,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759007455] [2024-06-27 17:08:28,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 17:08:28,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:28,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:28,954 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 17:08:28,982 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 17:08:28,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 17:08:28,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:28,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-27 17:08:28,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:29,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:29,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:29,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759007455] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:29,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:29,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2024-06-27 17:08:29,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543731586] [2024-06-27 17:08:29,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:29,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:08:29,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:29,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:08:29,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:08:29,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:29,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 519 flow. Second operand has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 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 17:08:29,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:29,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:29,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:29,297 INFO L124 PetriNetUnfolderBase]: 218/445 cut-off events. [2024-06-27 17:08:29,298 INFO L125 PetriNetUnfolderBase]: For 1966/1966 co-relation queries the response was YES. [2024-06-27 17:08:29,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2352 conditions, 445 events. 218/445 cut-off events. For 1966/1966 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1959 event pairs, 3 based on Foata normal form. 17/462 useless extension candidates. Maximal degree in co-relation 2273. Up to 152 conditions per place. [2024-06-27 17:08:29,301 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 77 selfloop transitions, 51 changer transitions 14/145 dead transitions. [2024-06-27 17:08:29,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 145 transitions, 1592 flow [2024-06-27 17:08:29,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 17:08:29,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 17:08:29,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-27 17:08:29,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 17:08:29,303 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 519 flow. Second operand 12 states and 144 transitions. [2024-06-27 17:08:29,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 145 transitions, 1592 flow [2024-06-27 17:08:29,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 145 transitions, 1164 flow, removed 214 selfloop flow, removed 2 redundant places. [2024-06-27 17:08:29,310 INFO L231 Difference]: Finished difference. Result has 68 places, 85 transitions, 790 flow [2024-06-27 17:08:29,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=790, PETRI_PLACES=68, PETRI_TRANSITIONS=85} [2024-06-27 17:08:29,311 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 48 predicate places. [2024-06-27 17:08:29,311 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 85 transitions, 790 flow [2024-06-27 17:08:29,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 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 17:08:29,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:29,312 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:29,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:29,523 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 17:08:29,524 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:29,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:29,524 INFO L85 PathProgramCache]: Analyzing trace with hash -108793195, now seen corresponding path program 3 times [2024-06-27 17:08:29,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:29,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046017648] [2024-06-27 17:08:29,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:29,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:29,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:29,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:29,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046017648] [2024-06-27 17:08:29,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046017648] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:29,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067852135] [2024-06-27 17:08:29,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 17:08:29,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:29,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:29,593 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 17:08:29,612 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 17:08:29,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-06-27 17:08:29,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:29,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-27 17:08:29,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:29,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:29,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:29,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:29,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067852135] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:29,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:29,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2024-06-27 17:08:29,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015142159] [2024-06-27 17:08:29,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:29,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:08:29,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:29,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:08:29,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:08:29,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:29,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 85 transitions, 790 flow. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:29,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:29,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:29,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:29,877 INFO L124 PetriNetUnfolderBase]: 232/475 cut-off events. [2024-06-27 17:08:29,877 INFO L125 PetriNetUnfolderBase]: For 2529/2529 co-relation queries the response was YES. [2024-06-27 17:08:29,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2248 conditions, 475 events. 232/475 cut-off events. For 2529/2529 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2141 event pairs, 4 based on Foata normal form. 16/491 useless extension candidates. Maximal degree in co-relation 2150. Up to 141 conditions per place. [2024-06-27 17:08:29,881 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 81 selfloop transitions, 58 changer transitions 0/142 dead transitions. [2024-06-27 17:08:29,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 142 transitions, 1433 flow [2024-06-27 17:08:29,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:08:29,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:08:29,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 17:08:29,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-06-27 17:08:29,883 INFO L175 Difference]: Start difference. First operand has 68 places, 85 transitions, 790 flow. Second operand 11 states and 120 transitions. [2024-06-27 17:08:29,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 142 transitions, 1433 flow [2024-06-27 17:08:29,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 142 transitions, 1280 flow, removed 62 selfloop flow, removed 5 redundant places. [2024-06-27 17:08:29,894 INFO L231 Difference]: Finished difference. Result has 75 places, 104 transitions, 1076 flow [2024-06-27 17:08:29,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1076, PETRI_PLACES=75, PETRI_TRANSITIONS=104} [2024-06-27 17:08:29,896 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 55 predicate places. [2024-06-27 17:08:29,896 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 104 transitions, 1076 flow [2024-06-27 17:08:29,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:29,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:29,897 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:29,912 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 17:08:30,112 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 17:08:30,113 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:30,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:30,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1001797831, now seen corresponding path program 4 times [2024-06-27 17:08:30,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:30,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571060135] [2024-06-27 17:08:30,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:30,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:30,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:30,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:30,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571060135] [2024-06-27 17:08:30,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571060135] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:30,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619228376] [2024-06-27 17:08:30,151 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 17:08:30,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:30,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:30,152 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 17:08:30,169 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 17:08:30,204 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 17:08:30,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:30,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-27 17:08:30,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:30,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:30,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:30,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:30,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619228376] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:30,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:30,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-06-27 17:08:30,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206068007] [2024-06-27 17:08:30,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:30,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:08:30,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:30,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:08:30,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:08:30,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:30,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 104 transitions, 1076 flow. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:30,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:30,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:30,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:30,467 INFO L124 PetriNetUnfolderBase]: 292/602 cut-off events. [2024-06-27 17:08:30,468 INFO L125 PetriNetUnfolderBase]: For 2472/2472 co-relation queries the response was YES. [2024-06-27 17:08:30,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3071 conditions, 602 events. 292/602 cut-off events. For 2472/2472 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2903 event pairs, 11 based on Foata normal form. 14/616 useless extension candidates. Maximal degree in co-relation 2504. Up to 294 conditions per place. [2024-06-27 17:08:30,486 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 97 selfloop transitions, 63 changer transitions 0/163 dead transitions. [2024-06-27 17:08:30,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 163 transitions, 1903 flow [2024-06-27 17:08:30,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 17:08:30,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 17:08:30,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-27 17:08:30,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601851851851852 [2024-06-27 17:08:30,488 INFO L175 Difference]: Start difference. First operand has 75 places, 104 transitions, 1076 flow. Second operand 12 states and 121 transitions. [2024-06-27 17:08:30,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 163 transitions, 1903 flow [2024-06-27 17:08:30,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 163 transitions, 1842 flow, removed 29 selfloop flow, removed 1 redundant places. [2024-06-27 17:08:30,499 INFO L231 Difference]: Finished difference. Result has 91 places, 134 transitions, 1634 flow [2024-06-27 17:08:30,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1634, PETRI_PLACES=91, PETRI_TRANSITIONS=134} [2024-06-27 17:08:30,500 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 71 predicate places. [2024-06-27 17:08:30,500 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 134 transitions, 1634 flow [2024-06-27 17:08:30,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:30,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:30,501 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:30,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-06-27 17:08:30,711 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 17:08:30,712 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:30,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:30,712 INFO L85 PathProgramCache]: Analyzing trace with hash -2045865696, now seen corresponding path program 5 times [2024-06-27 17:08:30,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:30,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749167951] [2024-06-27 17:08:30,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:30,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:30,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:30,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:30,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749167951] [2024-06-27 17:08:30,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749167951] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:30,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062459822] [2024-06-27 17:08:30,747 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-27 17:08:30,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:30,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:30,748 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 17:08:30,791 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 17:08:30,801 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 17:08:30,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:30,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-27 17:08:30,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:30,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:30,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:30,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062459822] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:30,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:30,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-06-27 17:08:30,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073719379] [2024-06-27 17:08:30,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:30,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 17:08:30,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:30,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 17:08:30,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-06-27 17:08:30,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:30,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 134 transitions, 1634 flow. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 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 17:08:30,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:30,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:30,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:30,985 INFO L124 PetriNetUnfolderBase]: 286/588 cut-off events. [2024-06-27 17:08:30,985 INFO L125 PetriNetUnfolderBase]: For 2668/2668 co-relation queries the response was YES. [2024-06-27 17:08:30,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3316 conditions, 588 events. 286/588 cut-off events. For 2668/2668 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2797 event pairs, 15 based on Foata normal form. 4/592 useless extension candidates. Maximal degree in co-relation 2793. Up to 190 conditions per place. [2024-06-27 17:08:30,989 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 114 selfloop transitions, 44 changer transitions 5/166 dead transitions. [2024-06-27 17:08:30,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 166 transitions, 2175 flow [2024-06-27 17:08:30,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:08:30,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:08:30,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-27 17:08:30,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-06-27 17:08:30,990 INFO L175 Difference]: Start difference. First operand has 91 places, 134 transitions, 1634 flow. Second operand 9 states and 93 transitions. [2024-06-27 17:08:30,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 166 transitions, 2175 flow [2024-06-27 17:08:31,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 166 transitions, 2066 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 17:08:31,002 INFO L231 Difference]: Finished difference. Result has 96 places, 135 transitions, 1664 flow [2024-06-27 17:08:31,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1664, PETRI_PLACES=96, PETRI_TRANSITIONS=135} [2024-06-27 17:08:31,003 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 76 predicate places. [2024-06-27 17:08:31,003 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 135 transitions, 1664 flow [2024-06-27 17:08:31,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 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 17:08:31,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:31,003 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:31,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-06-27 17:08:31,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:31,214 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:31,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:31,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1087164560, now seen corresponding path program 6 times [2024-06-27 17:08:31,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:31,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382252292] [2024-06-27 17:08:31,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:31,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:31,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:31,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:31,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382252292] [2024-06-27 17:08:31,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382252292] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:31,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167401309] [2024-06-27 17:08:31,294 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-06-27 17:08:31,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:31,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:31,296 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:31,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-06-27 17:08:31,332 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-06-27 17:08:31,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:31,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2024-06-27 17:08:31,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:31,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:31,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:31,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:31,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167401309] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:31,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:31,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 14 [2024-06-27 17:08:31,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887815879] [2024-06-27 17:08:31,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:31,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 17:08:31,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:31,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 17:08:31,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-06-27 17:08:31,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:31,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 135 transitions, 1664 flow. Second operand has 15 states, 15 states have (on average 7.666666666666667) internal successors, (115), 15 states have internal predecessors, (115), 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 17:08:31,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:31,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:31,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:31,608 INFO L124 PetriNetUnfolderBase]: 388/792 cut-off events. [2024-06-27 17:08:31,609 INFO L125 PetriNetUnfolderBase]: For 4458/4458 co-relation queries the response was YES. [2024-06-27 17:08:31,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4453 conditions, 792 events. 388/792 cut-off events. For 4458/4458 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4136 event pairs, 24 based on Foata normal form. 29/821 useless extension candidates. Maximal degree in co-relation 3923. Up to 502 conditions per place. [2024-06-27 17:08:31,614 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 156 selfloop transitions, 49 changer transitions 1/209 dead transitions. [2024-06-27 17:08:31,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 209 transitions, 2754 flow [2024-06-27 17:08:31,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:08:31,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:08:31,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 17:08:31,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6555555555555556 [2024-06-27 17:08:31,615 INFO L175 Difference]: Start difference. First operand has 96 places, 135 transitions, 1664 flow. Second operand 10 states and 118 transitions. [2024-06-27 17:08:31,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 209 transitions, 2754 flow [2024-06-27 17:08:31,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 209 transitions, 2648 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 17:08:31,632 INFO L231 Difference]: Finished difference. Result has 107 places, 169 transitions, 2158 flow [2024-06-27 17:08:31,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1595, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2158, PETRI_PLACES=107, PETRI_TRANSITIONS=169} [2024-06-27 17:08:31,633 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 87 predicate places. [2024-06-27 17:08:31,633 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 169 transitions, 2158 flow [2024-06-27 17:08:31,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.666666666666667) internal successors, (115), 15 states have internal predecessors, (115), 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 17:08:31,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:31,633 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:31,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:31,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:31,848 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:31,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:31,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1559127082, now seen corresponding path program 7 times [2024-06-27 17:08:31,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:31,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842555204] [2024-06-27 17:08:31,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:31,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:31,906 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 17:08:31,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:31,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842555204] [2024-06-27 17:08:31,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842555204] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:31,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84625354] [2024-06-27 17:08:31,907 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-06-27 17:08:31,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:31,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:31,908 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:31,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-06-27 17:08:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:31,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2024-06-27 17:08:31,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:32,016 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:32,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:32,032 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:08:32,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84625354] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:32,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:32,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 10 [2024-06-27 17:08:32,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810708133] [2024-06-27 17:08:32,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:32,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 17:08:32,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:32,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 17:08:32,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 17:08:32,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:32,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 169 transitions, 2158 flow. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 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 17:08:32,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:32,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:32,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:32,254 INFO L124 PetriNetUnfolderBase]: 576/1169 cut-off events. [2024-06-27 17:08:32,255 INFO L125 PetriNetUnfolderBase]: For 8650/8650 co-relation queries the response was YES. [2024-06-27 17:08:32,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7112 conditions, 1169 events. 576/1169 cut-off events. For 8650/8650 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6812 event pairs, 41 based on Foata normal form. 19/1188 useless extension candidates. Maximal degree in co-relation 6398. Up to 719 conditions per place. [2024-06-27 17:08:32,263 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 188 selfloop transitions, 89 changer transitions 5/285 dead transitions. [2024-06-27 17:08:32,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 285 transitions, 4037 flow [2024-06-27 17:08:32,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:08:32,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:08:32,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 17:08:32,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6414141414141414 [2024-06-27 17:08:32,265 INFO L175 Difference]: Start difference. First operand has 107 places, 169 transitions, 2158 flow. Second operand 11 states and 127 transitions. [2024-06-27 17:08:32,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 285 transitions, 4037 flow [2024-06-27 17:08:32,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 285 transitions, 3940 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-27 17:08:32,293 INFO L231 Difference]: Finished difference. Result has 122 places, 236 transitions, 3396 flow [2024-06-27 17:08:32,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2068, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3396, PETRI_PLACES=122, PETRI_TRANSITIONS=236} [2024-06-27 17:08:32,294 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 102 predicate places. [2024-06-27 17:08:32,294 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 236 transitions, 3396 flow [2024-06-27 17:08:32,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 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 17:08:32,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:32,294 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:32,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:32,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-06-27 17:08:32,507 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:32,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:32,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1018235034, now seen corresponding path program 8 times [2024-06-27 17:08:32,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:32,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022430709] [2024-06-27 17:08:32,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:32,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:32,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:32,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:32,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022430709] [2024-06-27 17:08:32,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022430709] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:32,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580527979] [2024-06-27 17:08:32,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 17:08:32,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:32,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:32,588 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:32,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-06-27 17:08:32,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 17:08:32,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:32,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2024-06-27 17:08:32,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:32,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:32,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:32,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:32,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580527979] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:32,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:32,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 14 [2024-06-27 17:08:32,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519502070] [2024-06-27 17:08:32,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:32,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 17:08:32,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:32,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 17:08:32,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-06-27 17:08:32,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:32,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 236 transitions, 3396 flow. Second operand has 15 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 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 17:08:32,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:32,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:32,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:33,018 INFO L124 PetriNetUnfolderBase]: 681/1349 cut-off events. [2024-06-27 17:08:33,018 INFO L125 PetriNetUnfolderBase]: For 15564/15564 co-relation queries the response was YES. [2024-06-27 17:08:33,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9293 conditions, 1349 events. 681/1349 cut-off events. For 15564/15564 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 8026 event pairs, 59 based on Foata normal form. 36/1385 useless extension candidates. Maximal degree in co-relation 8696. Up to 980 conditions per place. [2024-06-27 17:08:33,029 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 230 selfloop transitions, 81 changer transitions 5/319 dead transitions. [2024-06-27 17:08:33,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 319 transitions, 5070 flow [2024-06-27 17:08:33,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:08:33,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:08:33,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 17:08:33,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-06-27 17:08:33,030 INFO L175 Difference]: Start difference. First operand has 122 places, 236 transitions, 3396 flow. Second operand 10 states and 112 transitions. [2024-06-27 17:08:33,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 319 transitions, 5070 flow [2024-06-27 17:08:33,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 319 transitions, 4817 flow, removed 125 selfloop flow, removed 1 redundant places. [2024-06-27 17:08:33,086 INFO L231 Difference]: Finished difference. Result has 135 places, 278 transitions, 4076 flow [2024-06-27 17:08:33,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=3080, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4076, PETRI_PLACES=135, PETRI_TRANSITIONS=278} [2024-06-27 17:08:33,086 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 115 predicate places. [2024-06-27 17:08:33,086 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 278 transitions, 4076 flow [2024-06-27 17:08:33,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 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 17:08:33,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:33,087 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:33,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:33,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-06-27 17:08:33,299 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:33,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:33,299 INFO L85 PathProgramCache]: Analyzing trace with hash -602127284, now seen corresponding path program 9 times [2024-06-27 17:08:33,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:33,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819780753] [2024-06-27 17:08:33,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:33,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:33,363 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:33,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:33,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819780753] [2024-06-27 17:08:33,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819780753] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:33,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068165489] [2024-06-27 17:08:33,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 17:08:33,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:33,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:33,380 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:33,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-06-27 17:08:33,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-06-27 17:08:33,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:33,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-27 17:08:33,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:33,519 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-06-27 17:08:33,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 17:08:33,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068165489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:08:33,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 17:08:33,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-06-27 17:08:33,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46814491] [2024-06-27 17:08:33,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:08:33,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:08:33,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:33,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:08:33,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:08:33,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:33,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 278 transitions, 4076 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:33,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:33,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:33,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:33,738 INFO L124 PetriNetUnfolderBase]: 676/1312 cut-off events. [2024-06-27 17:08:33,738 INFO L125 PetriNetUnfolderBase]: For 16219/16219 co-relation queries the response was YES. [2024-06-27 17:08:33,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9418 conditions, 1312 events. 676/1312 cut-off events. For 16219/16219 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7686 event pairs, 8 based on Foata normal form. 14/1326 useless extension candidates. Maximal degree in co-relation 9185. Up to 625 conditions per place. [2024-06-27 17:08:33,748 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 212 selfloop transitions, 16 changer transitions 74/305 dead transitions. [2024-06-27 17:08:33,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 305 transitions, 4951 flow [2024-06-27 17:08:33,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:08:33,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:08:33,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 61 transitions. [2024-06-27 17:08:33,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5648148148148148 [2024-06-27 17:08:33,749 INFO L175 Difference]: Start difference. First operand has 135 places, 278 transitions, 4076 flow. Second operand 6 states and 61 transitions. [2024-06-27 17:08:33,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 305 transitions, 4951 flow [2024-06-27 17:08:33,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 305 transitions, 4767 flow, removed 81 selfloop flow, removed 3 redundant places. [2024-06-27 17:08:33,800 INFO L231 Difference]: Finished difference. Result has 139 places, 224 transitions, 3274 flow [2024-06-27 17:08:33,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=3896, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3274, PETRI_PLACES=139, PETRI_TRANSITIONS=224} [2024-06-27 17:08:33,801 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 119 predicate places. [2024-06-27 17:08:33,801 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 224 transitions, 3274 flow [2024-06-27 17:08:33,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:33,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:33,801 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:33,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-06-27 17:08:34,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-06-27 17:08:34,013 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:34,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:34,013 INFO L85 PathProgramCache]: Analyzing trace with hash 685748318, now seen corresponding path program 10 times [2024-06-27 17:08:34,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:34,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681967690] [2024-06-27 17:08:34,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:34,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:34,049 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:34,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:34,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681967690] [2024-06-27 17:08:34,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681967690] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:34,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082285225] [2024-06-27 17:08:34,049 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 17:08:34,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:34,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:34,050 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:34,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-06-27 17:08:34,097 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 17:08:34,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:34,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-27 17:08:34,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:34,147 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:34,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:34,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:34,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082285225] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:34,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:34,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-06-27 17:08:34,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366453639] [2024-06-27 17:08:34,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:34,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-06-27 17:08:34,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:34,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-06-27 17:08:34,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2024-06-27 17:08:34,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:34,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 224 transitions, 3274 flow. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 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 17:08:34,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:34,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:34,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:34,504 INFO L124 PetriNetUnfolderBase]: 519/1067 cut-off events. [2024-06-27 17:08:34,504 INFO L125 PetriNetUnfolderBase]: For 17071/17071 co-relation queries the response was YES. [2024-06-27 17:08:34,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8055 conditions, 1067 events. 519/1067 cut-off events. For 17071/17071 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6267 event pairs, 6 based on Foata normal form. 4/1071 useless extension candidates. Maximal degree in co-relation 7833. Up to 281 conditions per place. [2024-06-27 17:08:34,513 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 101 selfloop transitions, 207 changer transitions 2/313 dead transitions. [2024-06-27 17:08:34,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 313 transitions, 5015 flow [2024-06-27 17:08:34,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-27 17:08:34,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-27 17:08:34,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 189 transitions. [2024-06-27 17:08:34,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2024-06-27 17:08:34,515 INFO L175 Difference]: Start difference. First operand has 139 places, 224 transitions, 3274 flow. Second operand 19 states and 189 transitions. [2024-06-27 17:08:34,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 313 transitions, 5015 flow [2024-06-27 17:08:34,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 313 transitions, 4803 flow, removed 57 selfloop flow, removed 9 redundant places. [2024-06-27 17:08:34,564 INFO L231 Difference]: Finished difference. Result has 147 places, 261 transitions, 4608 flow [2024-06-27 17:08:34,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=3118, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4608, PETRI_PLACES=147, PETRI_TRANSITIONS=261} [2024-06-27 17:08:34,565 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 127 predicate places. [2024-06-27 17:08:34,565 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 261 transitions, 4608 flow [2024-06-27 17:08:34,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 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 17:08:34,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:34,565 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:34,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:34,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-06-27 17:08:34,777 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:34,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:34,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1321107271, now seen corresponding path program 11 times [2024-06-27 17:08:34,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:34,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279743793] [2024-06-27 17:08:34,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:34,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:34,847 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:34,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:34,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279743793] [2024-06-27 17:08:34,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279743793] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:34,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783307757] [2024-06-27 17:08:34,848 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-27 17:08:34,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:34,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:34,849 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:34,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-06-27 17:08:34,879 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-06-27 17:08:34,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:34,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-27 17:08:34,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:34,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:35,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:35,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783307757] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:35,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:35,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-06-27 17:08:35,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131574880] [2024-06-27 17:08:35,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:35,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-06-27 17:08:35,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:35,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-06-27 17:08:35,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2024-06-27 17:08:35,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:35,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 261 transitions, 4608 flow. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 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 17:08:35,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:35,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:35,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:35,325 INFO L124 PetriNetUnfolderBase]: 551/1079 cut-off events. [2024-06-27 17:08:35,325 INFO L125 PetriNetUnfolderBase]: For 17556/17556 co-relation queries the response was YES. [2024-06-27 17:08:35,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9150 conditions, 1079 events. 551/1079 cut-off events. For 17556/17556 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6095 event pairs, 6 based on Foata normal form. 4/1083 useless extension candidates. Maximal degree in co-relation 8780. Up to 610 conditions per place. [2024-06-27 17:08:35,343 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 228 selfloop transitions, 62 changer transitions 28/321 dead transitions. [2024-06-27 17:08:35,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 321 transitions, 6134 flow [2024-06-27 17:08:35,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-27 17:08:35,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-27 17:08:35,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 154 transitions. [2024-06-27 17:08:35,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032679738562091 [2024-06-27 17:08:35,345 INFO L175 Difference]: Start difference. First operand has 147 places, 261 transitions, 4608 flow. Second operand 17 states and 154 transitions. [2024-06-27 17:08:35,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 321 transitions, 6134 flow [2024-06-27 17:08:35,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 321 transitions, 5664 flow, removed 232 selfloop flow, removed 2 redundant places. [2024-06-27 17:08:35,417 INFO L231 Difference]: Finished difference. Result has 163 places, 271 transitions, 4556 flow [2024-06-27 17:08:35,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=4204, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4556, PETRI_PLACES=163, PETRI_TRANSITIONS=271} [2024-06-27 17:08:35,418 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 143 predicate places. [2024-06-27 17:08:35,418 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 271 transitions, 4556 flow [2024-06-27 17:08:35,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 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 17:08:35,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:35,419 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:35,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-06-27 17:08:35,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-06-27 17:08:35,631 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:35,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:35,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1963286468, now seen corresponding path program 12 times [2024-06-27 17:08:35,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:35,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484265451] [2024-06-27 17:08:35,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:35,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:35,685 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:35,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:35,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484265451] [2024-06-27 17:08:35,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484265451] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:35,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365572784] [2024-06-27 17:08:35,686 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-06-27 17:08:35,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:35,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:35,687 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:35,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-06-27 17:08:35,722 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-06-27 17:08:35,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:35,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-27 17:08:35,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:35,771 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:35,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:35,828 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:35,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365572784] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:35,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:35,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-06-27 17:08:35,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232058109] [2024-06-27 17:08:35,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:35,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 17:08:35,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:35,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 17:08:35,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-06-27 17:08:35,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:35,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 271 transitions, 4556 flow. Second operand has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 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 17:08:35,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:35,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:35,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:36,138 INFO L124 PetriNetUnfolderBase]: 570/1141 cut-off events. [2024-06-27 17:08:36,138 INFO L125 PetriNetUnfolderBase]: For 12331/12331 co-relation queries the response was YES. [2024-06-27 17:08:36,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8741 conditions, 1141 events. 570/1141 cut-off events. For 12331/12331 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6538 event pairs, 2 based on Foata normal form. 24/1165 useless extension candidates. Maximal degree in co-relation 8430. Up to 323 conditions per place. [2024-06-27 17:08:36,148 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 126 selfloop transitions, 221 changer transitions 2/352 dead transitions. [2024-06-27 17:08:36,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 352 transitions, 6265 flow [2024-06-27 17:08:36,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-27 17:08:36,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-27 17:08:36,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 157 transitions. [2024-06-27 17:08:36,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5451388888888888 [2024-06-27 17:08:36,149 INFO L175 Difference]: Start difference. First operand has 163 places, 271 transitions, 4556 flow. Second operand 16 states and 157 transitions. [2024-06-27 17:08:36,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 352 transitions, 6265 flow [2024-06-27 17:08:36,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 352 transitions, 6088 flow, removed 79 selfloop flow, removed 4 redundant places. [2024-06-27 17:08:36,238 INFO L231 Difference]: Finished difference. Result has 177 places, 312 transitions, 5966 flow [2024-06-27 17:08:36,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=4365, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5966, PETRI_PLACES=177, PETRI_TRANSITIONS=312} [2024-06-27 17:08:36,239 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 157 predicate places. [2024-06-27 17:08:36,239 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 312 transitions, 5966 flow [2024-06-27 17:08:36,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 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 17:08:36,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:36,240 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:36,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:36,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-06-27 17:08:36,452 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:36,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:36,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1671206709, now seen corresponding path program 13 times [2024-06-27 17:08:36,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:36,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661829751] [2024-06-27 17:08:36,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:36,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:36,497 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:36,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:36,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661829751] [2024-06-27 17:08:36,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661829751] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:36,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317226067] [2024-06-27 17:08:36,498 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-06-27 17:08:36,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:36,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:36,513 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:36,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-06-27 17:08:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:36,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-27 17:08:36,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:36,602 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:36,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:36,657 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:36,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317226067] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:36,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:36,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-06-27 17:08:36,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943177692] [2024-06-27 17:08:36,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:36,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 17:08:36,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:36,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 17:08:36,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2024-06-27 17:08:36,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:36,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 312 transitions, 5966 flow. Second operand has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 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 17:08:36,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:36,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:36,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:36,985 INFO L124 PetriNetUnfolderBase]: 599/1191 cut-off events. [2024-06-27 17:08:36,985 INFO L125 PetriNetUnfolderBase]: For 17733/17733 co-relation queries the response was YES. [2024-06-27 17:08:36,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10337 conditions, 1191 events. 599/1191 cut-off events. For 17733/17733 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6838 event pairs, 5 based on Foata normal form. 20/1211 useless extension candidates. Maximal degree in co-relation 9319. Up to 550 conditions per place. [2024-06-27 17:08:36,993 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 227 selfloop transitions, 129 changer transitions 19/378 dead transitions. [2024-06-27 17:08:36,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 378 transitions, 7825 flow [2024-06-27 17:08:36,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-27 17:08:36,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-27 17:08:36,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 156 transitions. [2024-06-27 17:08:36,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 17:08:36,995 INFO L175 Difference]: Start difference. First operand has 177 places, 312 transitions, 5966 flow. Second operand 16 states and 156 transitions. [2024-06-27 17:08:36,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 378 transitions, 7825 flow [2024-06-27 17:08:37,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 378 transitions, 7543 flow, removed 122 selfloop flow, removed 4 redundant places. [2024-06-27 17:08:37,067 INFO L231 Difference]: Finished difference. Result has 195 places, 331 transitions, 6788 flow [2024-06-27 17:08:37,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=5543, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6788, PETRI_PLACES=195, PETRI_TRANSITIONS=331} [2024-06-27 17:08:37,068 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 175 predicate places. [2024-06-27 17:08:37,068 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 331 transitions, 6788 flow [2024-06-27 17:08:37,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 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 17:08:37,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:37,068 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:37,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:37,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:37,280 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:37,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:37,280 INFO L85 PathProgramCache]: Analyzing trace with hash -969198971, now seen corresponding path program 14 times [2024-06-27 17:08:37,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:37,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859304855] [2024-06-27 17:08:37,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:37,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 17:08:37,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:37,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859304855] [2024-06-27 17:08:37,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859304855] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:37,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969584666] [2024-06-27 17:08:37,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 17:08:37,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:37,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:37,337 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:37,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-06-27 17:08:37,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 17:08:37,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:37,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-27 17:08:37,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:37,430 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:37,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:37,497 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:37,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969584666] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:37,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:37,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-06-27 17:08:37,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505784616] [2024-06-27 17:08:37,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:37,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-06-27 17:08:37,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:37,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-06-27 17:08:37,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2024-06-27 17:08:37,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:37,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 331 transitions, 6788 flow. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 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 17:08:37,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:37,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:37,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:37,841 INFO L124 PetriNetUnfolderBase]: 558/1096 cut-off events. [2024-06-27 17:08:37,842 INFO L125 PetriNetUnfolderBase]: For 16730/16730 co-relation queries the response was YES. [2024-06-27 17:08:37,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9771 conditions, 1096 events. 558/1096 cut-off events. For 16730/16730 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6050 event pairs, 4 based on Foata normal form. 14/1110 useless extension candidates. Maximal degree in co-relation 9678. Up to 550 conditions per place. [2024-06-27 17:08:37,851 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 222 selfloop transitions, 120 changer transitions 5/350 dead transitions. [2024-06-27 17:08:37,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 350 transitions, 7351 flow [2024-06-27 17:08:37,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-27 17:08:37,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-27 17:08:37,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 160 transitions. [2024-06-27 17:08:37,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228758169934641 [2024-06-27 17:08:37,853 INFO L175 Difference]: Start difference. First operand has 195 places, 331 transitions, 6788 flow. Second operand 17 states and 160 transitions. [2024-06-27 17:08:37,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 350 transitions, 7351 flow [2024-06-27 17:08:37,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 350 transitions, 6883 flow, removed 222 selfloop flow, removed 5 redundant places. [2024-06-27 17:08:37,938 INFO L231 Difference]: Finished difference. Result has 205 places, 319 transitions, 6256 flow [2024-06-27 17:08:37,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=6095, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6256, PETRI_PLACES=205, PETRI_TRANSITIONS=319} [2024-06-27 17:08:37,939 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 185 predicate places. [2024-06-27 17:08:37,939 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 319 transitions, 6256 flow [2024-06-27 17:08:37,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 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 17:08:37,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:37,939 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:37,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:38,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:38,151 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:38,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:38,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1536537335, now seen corresponding path program 15 times [2024-06-27 17:08:38,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:38,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385728304] [2024-06-27 17:08:38,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:38,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:38,195 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:38,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:38,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385728304] [2024-06-27 17:08:38,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385728304] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:38,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120762316] [2024-06-27 17:08:38,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 17:08:38,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:38,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:38,197 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:38,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-06-27 17:08:38,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-06-27 17:08:38,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:38,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-27 17:08:38,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:38,279 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-06-27 17:08:38,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 17:08:38,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120762316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:08:38,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 17:08:38,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-06-27 17:08:38,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114097597] [2024-06-27 17:08:38,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:08:38,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:08:38,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:38,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:08:38,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:08:38,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:38,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 319 transitions, 6256 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:38,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:38,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:38,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:38,459 INFO L124 PetriNetUnfolderBase]: 552/1059 cut-off events. [2024-06-27 17:08:38,459 INFO L125 PetriNetUnfolderBase]: For 12770/12772 co-relation queries the response was YES. [2024-06-27 17:08:38,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9336 conditions, 1059 events. 552/1059 cut-off events. For 12770/12772 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5706 event pairs, 9 based on Foata normal form. 13/1072 useless extension candidates. Maximal degree in co-relation 9187. Up to 541 conditions per place. [2024-06-27 17:08:38,467 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 214 selfloop transitions, 24 changer transitions 99/340 dead transitions. [2024-06-27 17:08:38,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 340 transitions, 7236 flow [2024-06-27 17:08:38,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:08:38,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:08:38,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 56 transitions. [2024-06-27 17:08:38,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-27 17:08:38,468 INFO L175 Difference]: Start difference. First operand has 205 places, 319 transitions, 6256 flow. Second operand 6 states and 56 transitions. [2024-06-27 17:08:38,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 340 transitions, 7236 flow [2024-06-27 17:08:38,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 340 transitions, 7004 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-06-27 17:08:38,532 INFO L231 Difference]: Finished difference. Result has 198 places, 235 transitions, 4433 flow [2024-06-27 17:08:38,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=6028, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4433, PETRI_PLACES=198, PETRI_TRANSITIONS=235} [2024-06-27 17:08:38,533 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 178 predicate places. [2024-06-27 17:08:38,533 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 235 transitions, 4433 flow [2024-06-27 17:08:38,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:38,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:38,533 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:38,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:38,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:38,745 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:38,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:38,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1782150499, now seen corresponding path program 16 times [2024-06-27 17:08:38,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:38,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265835173] [2024-06-27 17:08:38,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:38,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:38,788 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:38,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:38,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265835173] [2024-06-27 17:08:38,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265835173] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:38,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526598848] [2024-06-27 17:08:38,789 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 17:08:38,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:38,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:38,790 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:38,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-06-27 17:08:38,844 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 17:08:38,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:38,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-27 17:08:38,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:38,897 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:38,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:38,963 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:38,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526598848] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:38,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:38,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-06-27 17:08:38,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471168908] [2024-06-27 17:08:38,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:38,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 17:08:38,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:38,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 17:08:38,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-06-27 17:08:38,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:38,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 235 transitions, 4433 flow. Second operand has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 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 17:08:38,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:38,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:38,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:39,208 INFO L124 PetriNetUnfolderBase]: 444/822 cut-off events. [2024-06-27 17:08:39,208 INFO L125 PetriNetUnfolderBase]: For 9880/9880 co-relation queries the response was YES. [2024-06-27 17:08:39,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7094 conditions, 822 events. 444/822 cut-off events. For 9880/9880 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3925 event pairs, 3 based on Foata normal form. 12/830 useless extension candidates. Maximal degree in co-relation 6960. Up to 315 conditions per place. [2024-06-27 17:08:39,215 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 138 selfloop transitions, 147 changer transitions 4/292 dead transitions. [2024-06-27 17:08:39,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 292 transitions, 5581 flow [2024-06-27 17:08:39,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 17:08:39,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 17:08:39,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 130 transitions. [2024-06-27 17:08:39,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2024-06-27 17:08:39,216 INFO L175 Difference]: Start difference. First operand has 198 places, 235 transitions, 4433 flow. Second operand 14 states and 130 transitions. [2024-06-27 17:08:39,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 292 transitions, 5581 flow [2024-06-27 17:08:39,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 292 transitions, 5305 flow, removed 59 selfloop flow, removed 13 redundant places. [2024-06-27 17:08:39,258 INFO L231 Difference]: Finished difference. Result has 185 places, 267 transitions, 4956 flow [2024-06-27 17:08:39,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=4168, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4956, PETRI_PLACES=185, PETRI_TRANSITIONS=267} [2024-06-27 17:08:39,258 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 165 predicate places. [2024-06-27 17:08:39,258 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 267 transitions, 4956 flow [2024-06-27 17:08:39,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 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 17:08:39,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:39,259 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:39,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:39,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:39,469 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:39,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:39,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1776840379, now seen corresponding path program 17 times [2024-06-27 17:08:39,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:39,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362128627] [2024-06-27 17:08:39,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:39,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:39,504 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:39,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:39,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362128627] [2024-06-27 17:08:39,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362128627] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:39,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882960659] [2024-06-27 17:08:39,505 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-27 17:08:39,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:39,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:39,521 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:39,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-06-27 17:08:39,574 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-06-27 17:08:39,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:39,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-27 17:08:39,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:39,631 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:39,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:39,697 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:39,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882960659] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:39,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:39,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-06-27 17:08:39,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460409038] [2024-06-27 17:08:39,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:39,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-06-27 17:08:39,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:39,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-06-27 17:08:39,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2024-06-27 17:08:39,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:39,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 267 transitions, 4956 flow. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 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 17:08:39,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:39,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:39,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:39,946 INFO L124 PetriNetUnfolderBase]: 474/892 cut-off events. [2024-06-27 17:08:39,947 INFO L125 PetriNetUnfolderBase]: For 10438/10438 co-relation queries the response was YES. [2024-06-27 17:08:39,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7814 conditions, 892 events. 474/892 cut-off events. For 10438/10438 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4428 event pairs, 4 based on Foata normal form. 5/895 useless extension candidates. Maximal degree in co-relation 7418. Up to 331 conditions per place. [2024-06-27 17:08:39,954 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 128 selfloop transitions, 184 changer transitions 6/321 dead transitions. [2024-06-27 17:08:39,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 321 transitions, 6332 flow [2024-06-27 17:08:39,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 17:08:39,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 17:08:39,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 143 transitions. [2024-06-27 17:08:39,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5296296296296297 [2024-06-27 17:08:39,955 INFO L175 Difference]: Start difference. First operand has 185 places, 267 transitions, 4956 flow. Second operand 15 states and 143 transitions. [2024-06-27 17:08:39,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 321 transitions, 6332 flow [2024-06-27 17:08:39,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 321 transitions, 6195 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 17:08:40,000 INFO L231 Difference]: Finished difference. Result has 197 places, 284 transitions, 5939 flow [2024-06-27 17:08:40,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=4826, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5939, PETRI_PLACES=197, PETRI_TRANSITIONS=284} [2024-06-27 17:08:40,001 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 177 predicate places. [2024-06-27 17:08:40,001 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 284 transitions, 5939 flow [2024-06-27 17:08:40,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 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 17:08:40,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:40,001 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:40,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:40,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:40,213 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:40,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:40,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1530199125, now seen corresponding path program 18 times [2024-06-27 17:08:40,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:40,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778484391] [2024-06-27 17:08:40,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:40,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:40,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:40,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778484391] [2024-06-27 17:08:40,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778484391] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:40,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300923259] [2024-06-27 17:08:40,303 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-06-27 17:08:40,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:40,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:40,305 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:40,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-06-27 17:08:40,346 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-06-27 17:08:40,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:40,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 14 conjunts are in the unsatisfiable core [2024-06-27 17:08:40,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:40,448 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:40,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:40,496 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 17:08:40,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300923259] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:40,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:40,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 5] total 19 [2024-06-27 17:08:40,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291506133] [2024-06-27 17:08:40,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:40,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-06-27 17:08:40,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:40,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-06-27 17:08:40,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2024-06-27 17:08:40,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:40,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 284 transitions, 5939 flow. Second operand has 20 states, 20 states have (on average 7.2) internal successors, (144), 20 states have internal predecessors, (144), 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 17:08:40,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:40,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:40,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:40,837 INFO L124 PetriNetUnfolderBase]: 569/1065 cut-off events. [2024-06-27 17:08:40,838 INFO L125 PetriNetUnfolderBase]: For 15335/15335 co-relation queries the response was YES. [2024-06-27 17:08:40,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10026 conditions, 1065 events. 569/1065 cut-off events. For 15335/15335 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5545 event pairs, 9 based on Foata normal form. 31/1096 useless extension candidates. Maximal degree in co-relation 9617. Up to 670 conditions per place. [2024-06-27 17:08:40,848 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 236 selfloop transitions, 113 changer transitions 21/373 dead transitions. [2024-06-27 17:08:40,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 373 transitions, 8086 flow [2024-06-27 17:08:40,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 17:08:40,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 17:08:40,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 144 transitions. [2024-06-27 17:08:40,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-06-27 17:08:40,849 INFO L175 Difference]: Start difference. First operand has 197 places, 284 transitions, 5939 flow. Second operand 13 states and 144 transitions. [2024-06-27 17:08:40,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 373 transitions, 8086 flow [2024-06-27 17:08:40,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 373 transitions, 7884 flow, removed 89 selfloop flow, removed 4 redundant places. [2024-06-27 17:08:40,930 INFO L231 Difference]: Finished difference. Result has 213 places, 333 transitions, 7068 flow [2024-06-27 17:08:40,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=5757, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7068, PETRI_PLACES=213, PETRI_TRANSITIONS=333} [2024-06-27 17:08:40,931 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 193 predicate places. [2024-06-27 17:08:40,931 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 333 transitions, 7068 flow [2024-06-27 17:08:40,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.2) internal successors, (144), 20 states have internal predecessors, (144), 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 17:08:40,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:40,932 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:40,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:41,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:41,144 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:41,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:41,145 INFO L85 PathProgramCache]: Analyzing trace with hash 577034413, now seen corresponding path program 19 times [2024-06-27 17:08:41,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:41,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255443644] [2024-06-27 17:08:41,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:41,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:41,222 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:41,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:41,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255443644] [2024-06-27 17:08:41,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255443644] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:41,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432127793] [2024-06-27 17:08:41,223 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-06-27 17:08:41,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:41,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:41,224 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:41,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-06-27 17:08:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:41,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 14 conjunts are in the unsatisfiable core [2024-06-27 17:08:41,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:41,346 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:41,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:41,363 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:08:41,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432127793] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:41,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:41,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 5] total 13 [2024-06-27 17:08:41,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352300294] [2024-06-27 17:08:41,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:41,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 17:08:41,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:41,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 17:08:41,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-27 17:08:41,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:41,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 333 transitions, 7068 flow. Second operand has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 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 17:08:41,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:41,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:41,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:41,741 INFO L124 PetriNetUnfolderBase]: 739/1383 cut-off events. [2024-06-27 17:08:41,741 INFO L125 PetriNetUnfolderBase]: For 23674/23674 co-relation queries the response was YES. [2024-06-27 17:08:41,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13664 conditions, 1383 events. 739/1383 cut-off events. For 23674/23674 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 7653 event pairs, 9 based on Foata normal form. 13/1396 useless extension candidates. Maximal degree in co-relation 13186. Up to 841 conditions per place. [2024-06-27 17:08:41,753 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 284 selfloop transitions, 154 changer transitions 25/466 dead transitions. [2024-06-27 17:08:41,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 466 transitions, 10579 flow [2024-06-27 17:08:41,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 17:08:41,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 17:08:41,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 153 transitions. [2024-06-27 17:08:41,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-06-27 17:08:41,754 INFO L175 Difference]: Start difference. First operand has 213 places, 333 transitions, 7068 flow. Second operand 14 states and 153 transitions. [2024-06-27 17:08:41,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 466 transitions, 10579 flow [2024-06-27 17:08:41,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 466 transitions, 10445 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-27 17:08:41,857 INFO L231 Difference]: Finished difference. Result has 231 places, 402 transitions, 9002 flow [2024-06-27 17:08:41,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=6938, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9002, PETRI_PLACES=231, PETRI_TRANSITIONS=402} [2024-06-27 17:08:41,858 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 211 predicate places. [2024-06-27 17:08:41,858 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 402 transitions, 9002 flow [2024-06-27 17:08:41,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 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 17:08:41,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:41,858 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:41,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:42,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-06-27 17:08:42,076 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:42,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:42,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1578356599, now seen corresponding path program 20 times [2024-06-27 17:08:42,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:42,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599725707] [2024-06-27 17:08:42,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:42,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:42,180 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:42,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:42,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599725707] [2024-06-27 17:08:42,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599725707] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:42,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988858248] [2024-06-27 17:08:42,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 17:08:42,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:42,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:42,182 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:42,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-06-27 17:08:42,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 17:08:42,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:42,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 14 conjunts are in the unsatisfiable core [2024-06-27 17:08:42,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:42,309 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:42,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:08:42,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988858248] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:42,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:42,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 5] total 18 [2024-06-27 17:08:42,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103692397] [2024-06-27 17:08:42,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:42,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-06-27 17:08:42,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:42,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-06-27 17:08:42,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-06-27 17:08:42,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:42,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 402 transitions, 9002 flow. Second operand has 19 states, 19 states have (on average 7.368421052631579) internal successors, (140), 19 states have internal predecessors, (140), 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 17:08:42,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:42,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:42,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:42,808 INFO L124 PetriNetUnfolderBase]: 880/1636 cut-off events. [2024-06-27 17:08:42,808 INFO L125 PetriNetUnfolderBase]: For 50743/50743 co-relation queries the response was YES. [2024-06-27 17:08:42,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17795 conditions, 1636 events. 880/1636 cut-off events. For 50743/50743 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 9288 event pairs, 9 based on Foata normal form. 47/1683 useless extension candidates. Maximal degree in co-relation 17434. Up to 944 conditions per place. [2024-06-27 17:08:42,823 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 307 selfloop transitions, 189 changer transitions 35/534 dead transitions. [2024-06-27 17:08:42,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 534 transitions, 13044 flow [2024-06-27 17:08:42,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-27 17:08:42,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-27 17:08:42,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 183 transitions. [2024-06-27 17:08:42,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5980392156862745 [2024-06-27 17:08:42,824 INFO L175 Difference]: Start difference. First operand has 231 places, 402 transitions, 9002 flow. Second operand 17 states and 183 transitions. [2024-06-27 17:08:42,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 534 transitions, 13044 flow [2024-06-27 17:08:43,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 534 transitions, 12478 flow, removed 239 selfloop flow, removed 5 redundant places. [2024-06-27 17:08:43,064 INFO L231 Difference]: Finished difference. Result has 252 places, 466 transitions, 10573 flow [2024-06-27 17:08:43,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=8374, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10573, PETRI_PLACES=252, PETRI_TRANSITIONS=466} [2024-06-27 17:08:43,065 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 232 predicate places. [2024-06-27 17:08:43,065 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 466 transitions, 10573 flow [2024-06-27 17:08:43,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.368421052631579) internal successors, (140), 19 states have internal predecessors, (140), 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 17:08:43,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:43,066 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:43,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:43,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-06-27 17:08:43,276 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:43,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:43,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1669566385, now seen corresponding path program 21 times [2024-06-27 17:08:43,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:43,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14577705] [2024-06-27 17:08:43,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:43,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:43,350 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:43,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:43,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14577705] [2024-06-27 17:08:43,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14577705] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:43,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844963755] [2024-06-27 17:08:43,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 17:08:43,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:43,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:43,352 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:43,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-06-27 17:08:43,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-06-27 17:08:43,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:43,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-27 17:08:43,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-27 17:08:43,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 17:08:43,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844963755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:08:43,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 17:08:43,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2024-06-27 17:08:43,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501032468] [2024-06-27 17:08:43,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:08:43,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:08:43,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:43,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:08:43,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-06-27 17:08:43,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:43,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 466 transitions, 10573 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:43,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:43,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:43,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:43,829 INFO L124 PetriNetUnfolderBase]: 860/1714 cut-off events. [2024-06-27 17:08:43,830 INFO L125 PetriNetUnfolderBase]: For 64280/64282 co-relation queries the response was YES. [2024-06-27 17:08:43,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18928 conditions, 1714 events. 860/1714 cut-off events. For 64280/64282 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 10540 event pairs, 12 based on Foata normal form. 18/1732 useless extension candidates. Maximal degree in co-relation 18116. Up to 1194 conditions per place. [2024-06-27 17:08:43,844 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 452 selfloop transitions, 29 changer transitions 26/510 dead transitions. [2024-06-27 17:08:43,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 510 transitions, 12455 flow [2024-06-27 17:08:43,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:08:43,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:08:43,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 60 transitions. [2024-06-27 17:08:43,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-27 17:08:43,845 INFO L175 Difference]: Start difference. First operand has 252 places, 466 transitions, 10573 flow. Second operand 6 states and 60 transitions. [2024-06-27 17:08:43,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 510 transitions, 12455 flow [2024-06-27 17:08:44,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 510 transitions, 11727 flow, removed 264 selfloop flow, removed 5 redundant places. [2024-06-27 17:08:44,090 INFO L231 Difference]: Finished difference. Result has 252 places, 460 transitions, 9896 flow [2024-06-27 17:08:44,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=9876, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9896, PETRI_PLACES=252, PETRI_TRANSITIONS=460} [2024-06-27 17:08:44,091 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 232 predicate places. [2024-06-27 17:08:44,091 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 460 transitions, 9896 flow [2024-06-27 17:08:44,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:44,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:44,092 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:44,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:44,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-06-27 17:08:44,303 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:44,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:44,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1590918145, now seen corresponding path program 22 times [2024-06-27 17:08:44,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:44,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325115726] [2024-06-27 17:08:44,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:44,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:44,379 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:44,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:44,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325115726] [2024-06-27 17:08:44,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325115726] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:44,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669399576] [2024-06-27 17:08:44,380 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 17:08:44,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:44,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:44,381 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:44,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-06-27 17:08:44,413 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 17:08:44,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:44,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 14 conjunts are in the unsatisfiable core [2024-06-27 17:08:44,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:44,538 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:44,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:44,588 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 17:08:44,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669399576] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:44,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:44,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 5] total 19 [2024-06-27 17:08:44,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176618379] [2024-06-27 17:08:44,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:44,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-06-27 17:08:44,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:44,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-06-27 17:08:44,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2024-06-27 17:08:44,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:44,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 460 transitions, 9896 flow. Second operand has 20 states, 20 states have (on average 7.2) internal successors, (144), 20 states have internal predecessors, (144), 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 17:08:44,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:44,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:44,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:45,030 INFO L124 PetriNetUnfolderBase]: 872/1634 cut-off events. [2024-06-27 17:08:45,031 INFO L125 PetriNetUnfolderBase]: For 40543/40543 co-relation queries the response was YES. [2024-06-27 17:08:45,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16614 conditions, 1634 events. 872/1634 cut-off events. For 40543/40543 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 9317 event pairs, 26 based on Foata normal form. 1/1635 useless extension candidates. Maximal degree in co-relation 16371. Up to 1335 conditions per place. [2024-06-27 17:08:45,046 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 417 selfloop transitions, 99 changer transitions 5/524 dead transitions. [2024-06-27 17:08:45,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 524 transitions, 12045 flow [2024-06-27 17:08:45,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 17:08:45,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 17:08:45,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 118 transitions. [2024-06-27 17:08:45,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042735042735043 [2024-06-27 17:08:45,047 INFO L175 Difference]: Start difference. First operand has 252 places, 460 transitions, 9896 flow. Second operand 13 states and 118 transitions. [2024-06-27 17:08:45,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 524 transitions, 12045 flow [2024-06-27 17:08:45,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 524 transitions, 11644 flow, removed 62 selfloop flow, removed 9 redundant places. [2024-06-27 17:08:45,280 INFO L231 Difference]: Finished difference. Result has 253 places, 503 transitions, 10625 flow [2024-06-27 17:08:45,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=9564, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10625, PETRI_PLACES=253, PETRI_TRANSITIONS=503} [2024-06-27 17:08:45,281 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 233 predicate places. [2024-06-27 17:08:45,281 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 503 transitions, 10625 flow [2024-06-27 17:08:45,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.2) internal successors, (144), 20 states have internal predecessors, (144), 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 17:08:45,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:45,281 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:45,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:45,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:45,492 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:45,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:45,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1402585103, now seen corresponding path program 23 times [2024-06-27 17:08:45,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:45,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166345282] [2024-06-27 17:08:45,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:45,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:45,560 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:45,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:45,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166345282] [2024-06-27 17:08:45,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166345282] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:45,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010608644] [2024-06-27 17:08:45,561 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-27 17:08:45,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:45,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:45,562 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:45,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-06-27 17:08:45,597 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-06-27 17:08:45,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:45,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-27 17:08:45,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:45,679 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:45,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:45,788 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:45,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010608644] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:45,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:45,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 20 [2024-06-27 17:08:45,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819020520] [2024-06-27 17:08:45,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:45,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-06-27 17:08:45,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:45,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-06-27 17:08:45,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2024-06-27 17:08:45,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:45,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 503 transitions, 10625 flow. Second operand has 21 states, 21 states have (on average 6.9523809523809526) internal successors, (146), 21 states have internal predecessors, (146), 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 17:08:45,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:45,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:45,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:46,427 INFO L124 PetriNetUnfolderBase]: 913/1733 cut-off events. [2024-06-27 17:08:46,428 INFO L125 PetriNetUnfolderBase]: For 47294/47294 co-relation queries the response was YES. [2024-06-27 17:08:46,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17695 conditions, 1733 events. 913/1733 cut-off events. For 47294/47294 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 10145 event pairs, 3 based on Foata normal form. 6/1739 useless extension candidates. Maximal degree in co-relation 17102. Up to 661 conditions per place. [2024-06-27 17:08:46,442 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 170 selfloop transitions, 406 changer transitions 3/582 dead transitions. [2024-06-27 17:08:46,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 582 transitions, 13153 flow [2024-06-27 17:08:46,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-06-27 17:08:46,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-06-27 17:08:46,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 203 transitions. [2024-06-27 17:08:46,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126262626262627 [2024-06-27 17:08:46,443 INFO L175 Difference]: Start difference. First operand has 253 places, 503 transitions, 10625 flow. Second operand 22 states and 203 transitions. [2024-06-27 17:08:46,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 582 transitions, 13153 flow [2024-06-27 17:08:46,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 582 transitions, 13057 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-27 17:08:46,629 INFO L231 Difference]: Finished difference. Result has 278 places, 532 transitions, 12997 flow [2024-06-27 17:08:46,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=10529, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=381, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=12997, PETRI_PLACES=278, PETRI_TRANSITIONS=532} [2024-06-27 17:08:46,630 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 258 predicate places. [2024-06-27 17:08:46,631 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 532 transitions, 12997 flow [2024-06-27 17:08:46,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.9523809523809526) internal successors, (146), 21 states have internal predecessors, (146), 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 17:08:46,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:46,631 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:46,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:46,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-06-27 17:08:46,840 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:46,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:46,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1132830418, now seen corresponding path program 24 times [2024-06-27 17:08:46,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:46,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967699774] [2024-06-27 17:08:46,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:46,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:46,918 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 17:08:46,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:46,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967699774] [2024-06-27 17:08:46,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967699774] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:46,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914529297] [2024-06-27 17:08:46,919 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-06-27 17:08:46,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:46,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:46,933 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:46,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-06-27 17:08:46,966 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-06-27 17:08:46,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:46,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-27 17:08:46,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:47,051 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:47,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:47,140 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:47,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914529297] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:47,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:47,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 20 [2024-06-27 17:08:47,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384579001] [2024-06-27 17:08:47,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:47,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-06-27 17:08:47,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:47,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-06-27 17:08:47,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2024-06-27 17:08:47,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:47,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 532 transitions, 12997 flow. Second operand has 21 states, 21 states have (on average 6.9523809523809526) internal successors, (146), 21 states have internal predecessors, (146), 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 17:08:47,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:47,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:47,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:47,843 INFO L124 PetriNetUnfolderBase]: 1104/2042 cut-off events. [2024-06-27 17:08:47,844 INFO L125 PetriNetUnfolderBase]: For 82063/82063 co-relation queries the response was YES. [2024-06-27 17:08:47,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24146 conditions, 2042 events. 1104/2042 cut-off events. For 82063/82063 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 11925 event pairs, 22 based on Foata normal form. 21/2063 useless extension candidates. Maximal degree in co-relation 23394. Up to 793 conditions per place. [2024-06-27 17:08:47,864 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 329 selfloop transitions, 349 changer transitions 30/711 dead transitions. [2024-06-27 17:08:47,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 711 transitions, 18725 flow [2024-06-27 17:08:47,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-06-27 17:08:47,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-06-27 17:08:47,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 236 transitions. [2024-06-27 17:08:47,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042735042735043 [2024-06-27 17:08:47,866 INFO L175 Difference]: Start difference. First operand has 278 places, 532 transitions, 12997 flow. Second operand 26 states and 236 transitions. [2024-06-27 17:08:47,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 711 transitions, 18725 flow [2024-06-27 17:08:48,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 711 transitions, 17801 flow, removed 456 selfloop flow, removed 4 redundant places. [2024-06-27 17:08:48,331 INFO L231 Difference]: Finished difference. Result has 305 places, 629 transitions, 15920 flow [2024-06-27 17:08:48,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=12571, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=15920, PETRI_PLACES=305, PETRI_TRANSITIONS=629} [2024-06-27 17:08:48,334 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 285 predicate places. [2024-06-27 17:08:48,334 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 629 transitions, 15920 flow [2024-06-27 17:08:48,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.9523809523809526) internal successors, (146), 21 states have internal predecessors, (146), 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 17:08:48,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:48,342 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:48,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-06-27 17:08:48,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-06-27 17:08:48,547 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:48,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:48,548 INFO L85 PathProgramCache]: Analyzing trace with hash -949132521, now seen corresponding path program 25 times [2024-06-27 17:08:48,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:48,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424128931] [2024-06-27 17:08:48,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:48,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:48,594 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:48,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:48,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424128931] [2024-06-27 17:08:48,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424128931] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:48,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846056429] [2024-06-27 17:08:48,595 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-06-27 17:08:48,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:48,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:48,597 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:48,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-06-27 17:08:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:48,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-27 17:08:48,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:48,693 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:48,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:48,783 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:48,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846056429] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:48,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:48,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 19 [2024-06-27 17:08:48,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879623319] [2024-06-27 17:08:48,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:48,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-06-27 17:08:48,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:48,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-06-27 17:08:48,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2024-06-27 17:08:48,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:48,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 629 transitions, 15920 flow. Second operand has 20 states, 20 states have (on average 6.95) internal successors, (139), 20 states have internal predecessors, (139), 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 17:08:48,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:48,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:48,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:49,497 INFO L124 PetriNetUnfolderBase]: 1084/2006 cut-off events. [2024-06-27 17:08:49,498 INFO L125 PetriNetUnfolderBase]: For 49872/49872 co-relation queries the response was YES. [2024-06-27 17:08:49,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22420 conditions, 2006 events. 1084/2006 cut-off events. For 49872/49872 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 11610 event pairs, 2 based on Foata normal form. 8/2014 useless extension candidates. Maximal degree in co-relation 21705. Up to 829 conditions per place. [2024-06-27 17:08:49,521 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 277 selfloop transitions, 410 changer transitions 3/693 dead transitions. [2024-06-27 17:08:49,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 693 transitions, 18165 flow [2024-06-27 17:08:49,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-06-27 17:08:49,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-06-27 17:08:49,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 187 transitions. [2024-06-27 17:08:49,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947089947089947 [2024-06-27 17:08:49,522 INFO L175 Difference]: Start difference. First operand has 305 places, 629 transitions, 15920 flow. Second operand 21 states and 187 transitions. [2024-06-27 17:08:49,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 693 transitions, 18165 flow [2024-06-27 17:08:49,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 693 transitions, 16947 flow, removed 557 selfloop flow, removed 9 redundant places. [2024-06-27 17:08:49,946 INFO L231 Difference]: Finished difference. Result has 322 places, 652 transitions, 16907 flow [2024-06-27 17:08:49,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=14750, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=388, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=16907, PETRI_PLACES=322, PETRI_TRANSITIONS=652} [2024-06-27 17:08:49,947 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 302 predicate places. [2024-06-27 17:08:49,947 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 652 transitions, 16907 flow [2024-06-27 17:08:49,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.95) internal successors, (139), 20 states have internal predecessors, (139), 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 17:08:49,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:49,947 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:49,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:50,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:50,156 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:50,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:50,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1249310868, now seen corresponding path program 26 times [2024-06-27 17:08:50,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:50,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076918301] [2024-06-27 17:08:50,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:50,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:50,223 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 17:08:50,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:50,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076918301] [2024-06-27 17:08:50,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076918301] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:50,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591407000] [2024-06-27 17:08:50,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 17:08:50,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:50,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:50,241 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:50,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-06-27 17:08:50,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 17:08:50,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:50,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-27 17:08:50,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:50,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:50,461 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:50,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591407000] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:50,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:50,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 20 [2024-06-27 17:08:50,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145017769] [2024-06-27 17:08:50,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:50,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-06-27 17:08:50,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:50,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-06-27 17:08:50,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=283, Unknown=0, NotChecked=0, Total=420 [2024-06-27 17:08:50,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:50,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 652 transitions, 16907 flow. Second operand has 21 states, 21 states have (on average 6.9523809523809526) internal successors, (146), 21 states have internal predecessors, (146), 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 17:08:50,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:50,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:50,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:51,200 INFO L124 PetriNetUnfolderBase]: 1157/2124 cut-off events. [2024-06-27 17:08:51,200 INFO L125 PetriNetUnfolderBase]: For 39342/39342 co-relation queries the response was YES. [2024-06-27 17:08:51,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24208 conditions, 2124 events. 1157/2124 cut-off events. For 39342/39342 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 12304 event pairs, 28 based on Foata normal form. 12/2132 useless extension candidates. Maximal degree in co-relation 23730. Up to 795 conditions per place. [2024-06-27 17:08:51,222 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 261 selfloop transitions, 473 changer transitions 10/747 dead transitions. [2024-06-27 17:08:51,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 747 transitions, 20557 flow [2024-06-27 17:08:51,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-06-27 17:08:51,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-06-27 17:08:51,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 208 transitions. [2024-06-27 17:08:51,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5024154589371981 [2024-06-27 17:08:51,224 INFO L175 Difference]: Start difference. First operand has 322 places, 652 transitions, 16907 flow. Second operand 23 states and 208 transitions. [2024-06-27 17:08:51,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 747 transitions, 20557 flow [2024-06-27 17:08:51,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 747 transitions, 19992 flow, removed 95 selfloop flow, removed 13 redundant places. [2024-06-27 17:08:51,544 INFO L231 Difference]: Finished difference. Result has 333 places, 696 transitions, 18978 flow [2024-06-27 17:08:51,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=16388, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=430, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=18978, PETRI_PLACES=333, PETRI_TRANSITIONS=696} [2024-06-27 17:08:51,545 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 313 predicate places. [2024-06-27 17:08:51,545 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 696 transitions, 18978 flow [2024-06-27 17:08:51,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.9523809523809526) internal successors, (146), 21 states have internal predecessors, (146), 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 17:08:51,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:51,546 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:51,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:51,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:51,757 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:51,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:51,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1306509124, now seen corresponding path program 27 times [2024-06-27 17:08:51,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:51,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133189360] [2024-06-27 17:08:51,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:51,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:51,806 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:51,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:51,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133189360] [2024-06-27 17:08:51,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133189360] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:51,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262056591] [2024-06-27 17:08:51,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 17:08:51,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:51,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:51,808 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:51,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-06-27 17:08:51,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-06-27 17:08:51,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:51,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-27 17:08:51,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-06-27 17:08:51,877 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 17:08:51,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262056591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:08:51,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 17:08:51,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-06-27 17:08:51,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910705957] [2024-06-27 17:08:51,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:08:51,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:08:51,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:51,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:08:51,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:08:51,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:51,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 696 transitions, 18978 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:51,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:51,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:51,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:52,462 INFO L124 PetriNetUnfolderBase]: 1184/2124 cut-off events. [2024-06-27 17:08:52,462 INFO L125 PetriNetUnfolderBase]: For 36560/36560 co-relation queries the response was YES. [2024-06-27 17:08:52,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24878 conditions, 2124 events. 1184/2124 cut-off events. For 36560/36560 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 12227 event pairs, 6 based on Foata normal form. 26/2148 useless extension candidates. Maximal degree in co-relation 24566. Up to 1651 conditions per place. [2024-06-27 17:08:52,476 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 39 selfloop transitions, 5 changer transitions 685/732 dead transitions. [2024-06-27 17:08:52,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 732 transitions, 21141 flow [2024-06-27 17:08:52,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:08:52,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:08:52,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 61 transitions. [2024-06-27 17:08:52,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5648148148148148 [2024-06-27 17:08:52,478 INFO L175 Difference]: Start difference. First operand has 333 places, 696 transitions, 18978 flow. Second operand 6 states and 61 transitions. [2024-06-27 17:08:52,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 732 transitions, 21141 flow [2024-06-27 17:08:52,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 732 transitions, 20524 flow, removed 265 selfloop flow, removed 11 redundant places. [2024-06-27 17:08:52,830 INFO L231 Difference]: Finished difference. Result has 326 places, 39 transitions, 884 flow [2024-06-27 17:08:52,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=18337, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=687, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=884, PETRI_PLACES=326, PETRI_TRANSITIONS=39} [2024-06-27 17:08:52,832 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 306 predicate places. [2024-06-27 17:08:52,832 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 39 transitions, 884 flow [2024-06-27 17:08:52,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:52,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:52,832 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:52,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:53,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:53,037 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:53,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:53,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1725715314, now seen corresponding path program 28 times [2024-06-27 17:08:53,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:53,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494614459] [2024-06-27 17:08:53,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:53,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:53,078 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:53,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:53,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494614459] [2024-06-27 17:08:53,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494614459] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:53,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750919695] [2024-06-27 17:08:53,079 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 17:08:53,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:53,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:53,092 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:53,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-06-27 17:08:53,125 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 17:08:53,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:53,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-27 17:08:53,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:53,203 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:53,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:53,316 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:53,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750919695] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:53,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:53,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 20 [2024-06-27 17:08:53,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137129857] [2024-06-27 17:08:53,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:53,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-06-27 17:08:53,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:53,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-06-27 17:08:53,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2024-06-27 17:08:53,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:53,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 39 transitions, 884 flow. Second operand has 21 states, 21 states have (on average 6.9523809523809526) internal successors, (146), 21 states have internal predecessors, (146), 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 17:08:53,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:53,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:53,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:53,437 INFO L124 PetriNetUnfolderBase]: 47/125 cut-off events. [2024-06-27 17:08:53,438 INFO L125 PetriNetUnfolderBase]: For 8169/8169 co-relation queries the response was YES. [2024-06-27 17:08:53,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1489 conditions, 125 events. 47/125 cut-off events. For 8169/8169 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 323 event pairs, 1 based on Foata normal form. 3/128 useless extension candidates. Maximal degree in co-relation 1389. Up to 28 conditions per place. [2024-06-27 17:08:53,439 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 34 selfloop transitions, 14 changer transitions 8/59 dead transitions. [2024-06-27 17:08:53,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 59 transitions, 1147 flow [2024-06-27 17:08:53,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 17:08:53,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 17:08:53,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 113 transitions. [2024-06-27 17:08:53,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4829059829059829 [2024-06-27 17:08:53,440 INFO L175 Difference]: Start difference. First operand has 326 places, 39 transitions, 884 flow. Second operand 13 states and 113 transitions. [2024-06-27 17:08:53,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 59 transitions, 1147 flow [2024-06-27 17:08:53,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 59 transitions, 491 flow, removed 138 selfloop flow, removed 138 redundant places. [2024-06-27 17:08:53,449 INFO L231 Difference]: Finished difference. Result has 104 places, 35 transitions, 303 flow [2024-06-27 17:08:53,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=303, PETRI_PLACES=104, PETRI_TRANSITIONS=35} [2024-06-27 17:08:53,449 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 84 predicate places. [2024-06-27 17:08:53,449 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 35 transitions, 303 flow [2024-06-27 17:08:53,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.9523809523809526) internal successors, (146), 21 states have internal predecessors, (146), 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 17:08:53,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:53,450 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:53,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:53,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:53,660 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:53,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:53,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1385787660, now seen corresponding path program 29 times [2024-06-27 17:08:53,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:53,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147816915] [2024-06-27 17:08:53,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:53,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:53,777 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:53,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:53,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147816915] [2024-06-27 17:08:53,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147816915] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:53,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833308635] [2024-06-27 17:08:53,778 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-27 17:08:53,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:53,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:53,793 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:53,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-06-27 17:08:53,840 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-06-27 17:08:53,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:53,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-27 17:08:53,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-06-27 17:08:53,885 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 17:08:53,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833308635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:08:53,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 17:08:53,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 16 [2024-06-27 17:08:53,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216829293] [2024-06-27 17:08:53,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:08:53,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:08:53,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:53,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:08:53,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2024-06-27 17:08:53,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:53,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 35 transitions, 303 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:53,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:53,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:53,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:53,919 INFO L124 PetriNetUnfolderBase]: 40/105 cut-off events. [2024-06-27 17:08:53,920 INFO L125 PetriNetUnfolderBase]: For 567/567 co-relation queries the response was YES. [2024-06-27 17:08:53,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 105 events. 40/105 cut-off events. For 567/567 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 233 event pairs, 5 based on Foata normal form. 1/106 useless extension candidates. Maximal degree in co-relation 539. Up to 57 conditions per place. [2024-06-27 17:08:53,920 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 20 selfloop transitions, 1 changer transitions 21/45 dead transitions. [2024-06-27 17:08:53,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 45 transitions, 435 flow [2024-06-27 17:08:53,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:08:53,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:08:53,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 58 transitions. [2024-06-27 17:08:53,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-06-27 17:08:53,921 INFO L175 Difference]: Start difference. First operand has 104 places, 35 transitions, 303 flow. Second operand 6 states and 58 transitions. [2024-06-27 17:08:53,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 45 transitions, 435 flow [2024-06-27 17:08:53,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 45 transitions, 400 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 17:08:53,923 INFO L231 Difference]: Finished difference. Result has 95 places, 23 transitions, 155 flow [2024-06-27 17:08:53,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=155, PETRI_PLACES=95, PETRI_TRANSITIONS=23} [2024-06-27 17:08:53,924 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 75 predicate places. [2024-06-27 17:08:53,924 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 23 transitions, 155 flow [2024-06-27 17:08:53,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:53,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:53,924 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:53,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:54,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-06-27 17:08:54,136 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:54,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:54,136 INFO L85 PathProgramCache]: Analyzing trace with hash -760826870, now seen corresponding path program 30 times [2024-06-27 17:08:54,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:54,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278220091] [2024-06-27 17:08:54,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:54,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:54,239 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:54,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:54,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278220091] [2024-06-27 17:08:54,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278220091] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:54,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130725197] [2024-06-27 17:08:54,240 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-06-27 17:08:54,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:54,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:54,242 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:54,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-06-27 17:08:54,275 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-06-27 17:08:54,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:54,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-06-27 17:08:54,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:54,427 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:54,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:54,623 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:54,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130725197] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:54,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:54,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-06-27 17:08:54,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987522941] [2024-06-27 17:08:54,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:54,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-06-27 17:08:54,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:54,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-06-27 17:08:54,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=671, Unknown=0, NotChecked=0, Total=930 [2024-06-27 17:08:54,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:54,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 23 transitions, 155 flow. Second operand has 31 states, 31 states have (on average 6.612903225806452) internal successors, (205), 31 states have internal predecessors, (205), 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 17:08:54,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:54,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:54,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:54,792 INFO L124 PetriNetUnfolderBase]: 19/60 cut-off events. [2024-06-27 17:08:54,792 INFO L125 PetriNetUnfolderBase]: For 288/288 co-relation queries the response was YES. [2024-06-27 17:08:54,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 60 events. 19/60 cut-off events. For 288/288 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 1 based on Foata normal form. 1/61 useless extension candidates. Maximal degree in co-relation 323. Up to 14 conditions per place. [2024-06-27 17:08:54,793 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 21 selfloop transitions, 11 changer transitions 5/40 dead transitions. [2024-06-27 17:08:54,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 40 transitions, 320 flow [2024-06-27 17:08:54,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 17:08:54,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 17:08:54,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 103 transitions. [2024-06-27 17:08:54,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44017094017094016 [2024-06-27 17:08:54,794 INFO L175 Difference]: Start difference. First operand has 95 places, 23 transitions, 155 flow. Second operand 13 states and 103 transitions. [2024-06-27 17:08:54,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 40 transitions, 320 flow [2024-06-27 17:08:54,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 40 transitions, 264 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-06-27 17:08:54,796 INFO L231 Difference]: Finished difference. Result has 83 places, 24 transitions, 153 flow [2024-06-27 17:08:54,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=153, PETRI_PLACES=83, PETRI_TRANSITIONS=24} [2024-06-27 17:08:54,796 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 63 predicate places. [2024-06-27 17:08:54,796 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 24 transitions, 153 flow [2024-06-27 17:08:54,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.612903225806452) internal successors, (205), 31 states have internal predecessors, (205), 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 17:08:54,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:54,797 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:54,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:55,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:55,008 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:55,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:55,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1217836503, now seen corresponding path program 31 times [2024-06-27 17:08:55,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:55,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445863955] [2024-06-27 17:08:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:55,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:55,062 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:55,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:55,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445863955] [2024-06-27 17:08:55,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445863955] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:55,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897040469] [2024-06-27 17:08:55,063 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-06-27 17:08:55,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:55,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:55,077 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:55,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-06-27 17:08:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:55,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjunts are in the unsatisfiable core [2024-06-27 17:08:55,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:55,224 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:55,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:55,368 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:55,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897040469] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:55,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:55,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 11] total 25 [2024-06-27 17:08:55,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057239912] [2024-06-27 17:08:55,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:55,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-06-27 17:08:55,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:55,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-06-27 17:08:55,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=434, Unknown=0, NotChecked=0, Total=650 [2024-06-27 17:08:55,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:55,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 24 transitions, 153 flow. Second operand has 26 states, 26 states have (on average 6.8076923076923075) internal successors, (177), 26 states have internal predecessors, (177), 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 17:08:55,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:55,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:55,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:55,449 INFO L124 PetriNetUnfolderBase]: 25/74 cut-off events. [2024-06-27 17:08:55,449 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2024-06-27 17:08:55,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 74 events. 25/74 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 117 event pairs, 1 based on Foata normal form. 3/77 useless extension candidates. Maximal degree in co-relation 349. Up to 23 conditions per place. [2024-06-27 17:08:55,450 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 21 selfloop transitions, 7 changer transitions 13/44 dead transitions. [2024-06-27 17:08:55,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 44 transitions, 338 flow [2024-06-27 17:08:55,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 17:08:55,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 17:08:55,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 102 transitions. [2024-06-27 17:08:55,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-27 17:08:55,451 INFO L175 Difference]: Start difference. First operand has 83 places, 24 transitions, 153 flow. Second operand 13 states and 102 transitions. [2024-06-27 17:08:55,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 44 transitions, 338 flow [2024-06-27 17:08:55,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 44 transitions, 301 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 17:08:55,453 INFO L231 Difference]: Finished difference. Result has 91 places, 25 transitions, 167 flow [2024-06-27 17:08:55,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=167, PETRI_PLACES=91, PETRI_TRANSITIONS=25} [2024-06-27 17:08:55,453 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 71 predicate places. [2024-06-27 17:08:55,454 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 25 transitions, 167 flow [2024-06-27 17:08:55,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.8076923076923075) internal successors, (177), 26 states have internal predecessors, (177), 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 17:08:55,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:55,454 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:55,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:55,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:55,665 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:55,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:55,665 INFO L85 PathProgramCache]: Analyzing trace with hash -231749041, now seen corresponding path program 32 times [2024-06-27 17:08:55,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:55,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398608030] [2024-06-27 17:08:55,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:55,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:55,842 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:55,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:55,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398608030] [2024-06-27 17:08:55,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398608030] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:55,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010895404] [2024-06-27 17:08:55,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 17:08:55,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:55,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:55,844 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:55,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-06-27 17:08:55,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 17:08:55,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:55,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 22 conjunts are in the unsatisfiable core [2024-06-27 17:08:55,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:56,080 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:56,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:08:56,173 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 17:08:56,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010895404] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:08:56,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:08:56,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 7] total 29 [2024-06-27 17:08:56,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942216822] [2024-06-27 17:08:56,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:08:56,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-06-27 17:08:56,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:56,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-06-27 17:08:56,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2024-06-27 17:08:56,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:56,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 25 transitions, 167 flow. Second operand has 30 states, 30 states have (on average 6.866666666666666) internal successors, (206), 30 states have internal predecessors, (206), 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 17:08:56,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:56,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:56,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:56,375 INFO L124 PetriNetUnfolderBase]: 31/88 cut-off events. [2024-06-27 17:08:56,376 INFO L125 PetriNetUnfolderBase]: For 230/230 co-relation queries the response was YES. [2024-06-27 17:08:56,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 88 events. 31/88 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 160 event pairs, 2 based on Foata normal form. 1/89 useless extension candidates. Maximal degree in co-relation 467. Up to 22 conditions per place. [2024-06-27 17:08:56,376 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 28 selfloop transitions, 19 changer transitions 5/55 dead transitions. [2024-06-27 17:08:56,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 55 transitions, 442 flow [2024-06-27 17:08:56,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-27 17:08:56,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-27 17:08:56,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 148 transitions. [2024-06-27 17:08:56,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327485380116959 [2024-06-27 17:08:56,377 INFO L175 Difference]: Start difference. First operand has 91 places, 25 transitions, 167 flow. Second operand 19 states and 148 transitions. [2024-06-27 17:08:56,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 55 transitions, 442 flow [2024-06-27 17:08:56,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 55 transitions, 401 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-27 17:08:56,379 INFO L231 Difference]: Finished difference. Result has 97 places, 33 transitions, 245 flow [2024-06-27 17:08:56,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=245, PETRI_PLACES=97, PETRI_TRANSITIONS=33} [2024-06-27 17:08:56,380 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 77 predicate places. [2024-06-27 17:08:56,380 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 33 transitions, 245 flow [2024-06-27 17:08:56,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.866666666666666) internal successors, (206), 30 states have internal predecessors, (206), 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 17:08:56,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:56,380 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:56,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:56,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-06-27 17:08:56,591 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 17:08:56,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:56,592 INFO L85 PathProgramCache]: Analyzing trace with hash 2053162588, now seen corresponding path program 33 times [2024-06-27 17:08:56,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:56,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230305653] [2024-06-27 17:08:56,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:56,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:56,651 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:08:56,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:56,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230305653] [2024-06-27 17:08:56,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230305653] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:08:56,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371427573] [2024-06-27 17:08:56,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 17:08:56,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:08:56,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:56,654 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:08:56,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-06-27 17:08:56,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-06-27 17:08:56,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:08:56,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-27 17:08:56,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:08:56,741 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-06-27 17:08:56,742 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 17:08:56,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371427573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:08:56,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 17:08:56,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2024-06-27 17:08:56,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418369850] [2024-06-27 17:08:56,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:08:56,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:08:56,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:56,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:08:56,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:08:56,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-06-27 17:08:56,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 33 transitions, 245 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:56,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:56,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-06-27 17:08:56,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:56,765 INFO L124 PetriNetUnfolderBase]: 29/84 cut-off events. [2024-06-27 17:08:56,766 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2024-06-27 17:08:56,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 84 events. 29/84 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 164 event pairs, 0 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 442. Up to 37 conditions per place. [2024-06-27 17:08:56,766 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2024-06-27 17:08:56,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 36 transitions, 318 flow [2024-06-27 17:08:56,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:08:56,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:08:56,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 49 transitions. [2024-06-27 17:08:56,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-06-27 17:08:56,767 INFO L175 Difference]: Start difference. First operand has 97 places, 33 transitions, 245 flow. Second operand 6 states and 49 transitions. [2024-06-27 17:08:56,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 36 transitions, 318 flow [2024-06-27 17:08:56,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 36 transitions, 267 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-27 17:08:56,769 INFO L231 Difference]: Finished difference. Result has 89 places, 0 transitions, 0 flow [2024-06-27 17:08:56,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=89, PETRI_TRANSITIONS=0} [2024-06-27 17:08:56,769 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 69 predicate places. [2024-06-27 17:08:56,769 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 0 transitions, 0 flow [2024-06-27 17:08:56,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:08:56,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-06-27 17:08:56,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-06-27 17:08:56,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-06-27 17:08:56,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-06-27 17:08:56,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-06-27 17:08:56,983 INFO L445 BasicCegarLoop]: Path program histogram: [33, 2, 2, 1] [2024-06-27 17:08:56,986 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 17:08:56,986 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 17:08:56,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 05:08:56 BasicIcfg [2024-06-27 17:08:56,989 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 17:08:56,990 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-06-27 17:08:56,990 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-06-27 17:08:56,990 INFO L274 PluginConnector]: Witness Printer initialized [2024-06-27 17:08:56,990 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:08:26" (3/4) ... [2024-06-27 17:08:56,991 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-06-27 17:08:56,994 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-06-27 17:08:56,994 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-06-27 17:08:57,000 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 44 nodes and edges [2024-06-27 17:08:57,000 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-06-27 17:08:57,000 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-06-27 17:08:57,001 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-06-27 17:08:57,068 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-06-27 17:08:57,068 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-06-27 17:08:57,068 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-06-27 17:08:57,069 INFO L158 Benchmark]: Toolchain (without parser) took 31311.68ms. Allocated memory was 146.8MB in the beginning and 1.1GB in the end (delta: 962.6MB). Free memory was 111.0MB in the beginning and 736.7MB in the end (delta: -625.7MB). Peak memory consumption was 336.2MB. Max. memory is 16.1GB. [2024-06-27 17:08:57,070 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 146.8MB. Free memory was 109.6MB in the beginning and 109.4MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 17:08:57,070 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.63ms. Allocated memory is still 146.8MB. Free memory was 111.0MB in the beginning and 99.1MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-06-27 17:08:57,070 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.05ms. Allocated memory is still 146.8MB. Free memory was 99.1MB in the beginning and 97.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 17:08:57,070 INFO L158 Benchmark]: Boogie Preprocessor took 32.74ms. Allocated memory is still 146.8MB. Free memory was 97.7MB in the beginning and 95.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 17:08:57,071 INFO L158 Benchmark]: RCFGBuilder took 475.88ms. Allocated memory is still 146.8MB. Free memory was 95.6MB in the beginning and 105.6MB in the end (delta: -10.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-06-27 17:08:57,071 INFO L158 Benchmark]: TraceAbstraction took 30468.59ms. Allocated memory was 146.8MB in the beginning and 1.1GB in the end (delta: 962.6MB). Free memory was 104.9MB in the beginning and 740.9MB in the end (delta: -636.1MB). Peak memory consumption was 328.0MB. Max. memory is 16.1GB. [2024-06-27 17:08:57,071 INFO L158 Benchmark]: Witness Printer took 78.89ms. Allocated memory is still 1.1GB. Free memory was 740.9MB in the beginning and 736.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 17:08:57,075 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 146.8MB. Free memory was 109.6MB in the beginning and 109.4MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 216.63ms. Allocated memory is still 146.8MB. Free memory was 111.0MB in the beginning and 99.1MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.05ms. Allocated memory is still 146.8MB. Free memory was 99.1MB in the beginning and 97.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.74ms. Allocated memory is still 146.8MB. Free memory was 97.7MB in the beginning and 95.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 475.88ms. Allocated memory is still 146.8MB. Free memory was 95.6MB in the beginning and 105.6MB in the end (delta: -10.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 30468.59ms. Allocated memory was 146.8MB in the beginning and 1.1GB in the end (delta: 962.6MB). Free memory was 104.9MB in the beginning and 740.9MB in the end (delta: -636.1MB). Peak memory consumption was 328.0MB. Max. memory is 16.1GB. * Witness Printer took 78.89ms. Allocated memory is still 1.1GB. Free memory was 740.9MB in the beginning and 736.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 70]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 25 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 30.4s, OverallIterations: 38, TraceHistogramMax: 6, PathProgramHistogramMax: 33, EmptinessCheckTime: 0.0s, AutomataDifference: 14.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1756 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1756 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 437 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6300 IncrementalHoareTripleChecker+Invalid, 6737 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 437 mSolverCounterUnsat, 0 mSDtfsCounter, 6300 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1546 GetRequests, 845 SyntacticMatches, 20 SemanticMatches, 681 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4577 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18978occurred in iteration=31, InterpolantAutomatonStates: 470, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 1317 NumberOfCodeBlocks, 1304 NumberOfCodeBlocksAsserted, 118 NumberOfCheckSat, 1728 ConstructedInterpolants, 0 QuantifiedInterpolants, 8088 SizeOfPredicates, 9 NumberOfNonLiveVariables, 3350 ConjunctsInSsa, 300 ConjunctsInUnsatCore, 100 InterpolantComputations, 11 PerfectInterpolantSequences, 465/1110 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 17:08:57,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE